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Having a dead-on-arrival CPU can be a frustrating experience, especially when you’re building a new computer or upgrading an existing one.
If your CPU doesn’t work, any other component won’t work as it should. However, other faulty hardware can also cause similar issues. So, how can you know if your CPU is DOA?
Well, don’t worry. Here I’ll show you how to detect a DOA CPU and the steps you can take to resolve the issue.
So, let’s jump in.
How to Determine If Your CPU is Dead on Arrival
DOA, aka Dead On Arrival, describes the conditions of a computer or PC hardware when you first receive it. You can easily determine if your CPU is DOA or not by simply plugging and playing. If you were able to get into BIOS and run tests, your CPU is in good condition.
In this section, I will show you how you can identify a DOA CPU. Let’s see how to do it.
Here are the methods to identify a dead-on-arrival (DOA) CPU:
1. Visual Inspection
While checking for CPU DOA errors, you need to look if there are any physical damages or deformations on the CPU. Because physical damage is the main reason for processor DOA. So compare the CPU with its original looks after opening the package.
2. POST Test (Power On Self Test)
Power On Self Test verifies whether the CPU connected to your motherboard is working or not. You can perform this POST test using the computer’s BIOS. If the POST fails, the computer will not boot or display an error message CPU is not functioning properly.
From there, you can be sure your CPU is dead.
3. Attempt to Boot
If your PC fails to boot up or freezes at a certain point, there is a problem with the CPU. In that case, you need to use your CPU on another PC. If the issue remains, then your CPU is faulty.
4. Sudden Shutdown
While using your device, if your pc shows error messages like CPU not functional or overheating, there is some issue with your CPU. However, if your PC suddenly shuts down and you can’t turn it on again, your CPU can get a DOA error.
5. BIOS Settings
You should enter the BIOS and check the CPU settings to ensure the motherboard recognizes your CPU and it functions properly. If not, then your CPU may have some issues.
These are the general methods to tell if your CPU is DOA. But you may not apply it to every computer or CPU. So, if you are unsure, it is best to consult a professional or the manufacturer for further assistance.
On a side note, you should check out our detailed discussion on whether thermal paste can damage the CPU or not.
What Can Cause a DOA CPU?
Usually, physical damage like bend pins, damage in IHS, SMD wreck, or unintentional rub-in the processor surface connector can cause the dead-on-arrival issue in your CPU. Because these kinds of damage can hurt the DIE of your processor. Also, some errors in the factory can cause DOA CPU.
In this portion, I will show you some key reasons that can cause CPU dead-on-arrival problems. It will help you to identify your CPU fault and quickly replace it.
Below are the reasons that can cause the CPU DOA issue:
If your CPU has some bend connector pins, it can be dead. You shouldn’t mount that CPU in your motherboard.
When the CPU IHS has some dent on the surface, it can damage the DIE inside, making the CPU dead.
SMD damage can be responsible for a damaged CPU.
The processor won’t work on your motherboard if you accidentally hard-rub the CPU connector. So make sure to clean your CPU adequately.
These are some reasons that can make your CPU dead. Additionally, dropping the CPU package during delivery can also result in a DOA processor. Read the following section to know what you can do to fix the DOA CPU.
How to Fix Your Defect on Arrival CPU
Unfortunately, there isn’t any way to fix the CPU DOA problem. All you can do is ask for a refund or claim the replacement warranty.
Luckily, if you get a faulty CPU or any parts that break within 30 days of the delivery date, you will get a replacement from the retailer. Also, here’s our in-depth guide on whether a damaged CPU can still work or not.
Can a CPU be DOA?
Yes, your CPU can be DOA, but it’s very rare. Because the CPU goes through some extensive tests before manufacturers release them in the market.
How common is a DOA CPU?
CPU DOA is a very rare problem, but possible. Because the CPU is more sturdy than any other PC component available in the market.
Does the DOA part have warranties?
Yes, you will get a replacement warranty. If you get faulty items or any parts that break within 30 days of the delivery date, you can consider them Dead on Arrival (DOA). Any DOA part has a 30 days replacement warranty.
In short, the CPU is like the brain of your computer. It’s common sense; if your brain is dead, then none of your body parts will work. Just like that, your PC will not open on a dead CPU. Sadly, there isn’t any way to fix dead-on-arrival CPUs. You can only replace the hardware.
After reading the article, I’m sure you know the method to check any dead/damaged CPU on arrival. Comment if you have any other queries about PC hardware. Peace!
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We’ve seen first hand at just how convincing a knock-off Xiaomi M1S can look, but with the companies continued popularity and current Xiaomi M2 shortages, small Chinese phone makers have turned their hands to producing Xiaomi M2 clones!
Generally we can tell a fake or clone phone from a mile away and it’s usually the low-price and high specs that give the game away, however the problem Xiaomi customers are facing is that real Xiaomi phones are high-spec, low-cost devices. But worst still is the fact that most consumers haven’t seen a real Xiaomi M2 and have nothing to compare a possible fake to!
With growing complaints on Chinese online auction sites such as Taobao, Chinese tech site CnBeta have decided to put together these comparison photos of the real Xiaomi M2 and the fake, as you can see the knock-off could easily be passed off as real!
Starting with the packaging of the Xiaomi M2 clone, it’s near identical to the real thing with no real way to tell it apart from a genuine chúng tôi package is almost the same.
Xiaomi’s use of recycled cardboard makes them unique and keeps costs low, but it also helps clone makers from passing their phones off as the real thing.
Can you tell which is the real Xiaomi M2? No, neither could we from this distance. It’s only when you get up close and personal with the phones you start to see the differences. (FYI the fake Xiaomi M2 is on the left)Gizchina News of the week
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As you can see the real Xiaomi phone has much better printing for the logo and also features a star, where as the fake has rough printing and no star. Unfortunately this will hardly help if the person running the printing machine decides to put a little more effort in!
For the rear logo it’s only poor quality which would give the game away and nothing which you would pick up if you just glanced at the logo.
On the inside things are a little easier to spot, but again only if you know what to look for. The fake (on the left) for example is missing the emergency ROM flashing connections (two points either side of the sim). The real phone also features a black plastic sticker and non-standard head screws. It’s also plain to see that the real Xiaomi has a larger camera sensor and better quality rear flash.
This time the real M2 is above and we can see that the volume buttons of the fake are of poor quality and feature bad moulding. Some fakes have even been known to turn up with the rubber under the buttons missing.
These tips are just ways of telling the real from the fake from the external appearance of the phone. There are also ways to tell from teh OS and performance too, which you can check out here.
For those of you hoping to get a real Xiaomi M2, Xiaomi’s CEO Lei Jun has some informative words on his Weibo for you”
“The only way to buy M2 is from Official Page of XiaoMi.”
What if we wake up one morning to the news that a super-power AI has emerged with disastrous consequences? Nick Bostrom’s Superintelligent and Max Tegmark’s Life 3.0 books argue that malevolent superintelligence is an existential risk for humanity. Rather than endless anticipation, it’s better to ask a more concrete, empirical question: What would alarm us that superintelligence is indeed at the doorstep? If an AI program develops fundamental new capabilities, that’s the equivalent of a canary collapsing. AI’s performance in games like Go, poker, or Quake 3, is not a canary. The bulk of AI in such games is social work to highlight the problem and design the solution. The credit for AlphaGo’s victory over human Go champions was the talented human team at DeepMind that merely ran the algorithm the people had created. It explains why it takes several years of hard work to translate AI success from one little challenge to the next. Techniques such as deep learning are general, but their impactful application to a particular task needs extensive human intervention. Over the past decades, AI’s core success is machine learning, yet the term ‘machine learning’ is a misnomer. Machines own only a narrow silver of humans’ versatile learning abilities. If you say machine learning is like baby penguins, know how to fish. The reality is that adult penguins swim, catch fish, digest it. They regurgitate fish into their beaks and place morsels into their children’s mouths. Similarly, human scientists and engineers are spoon-feeding AI. In contrast to machine learning , human learning plans personal motivation to a strategic learning plan. For example, I want to drive to be independent of my parents (Personal motivation) to take driver’s ed and practice on weekends (strategic learning). An individual formulates specific learning targets, collects, and labels data. Machines cannot even remotely replicate any of these human abilities. Machines can perform like superhuman; including statistical calculations, but that is merely the last mile of learning. The automated formula of learning problems is our first canary, and it does not seem anywhere close to dying. The second canary is self-driving cars. As Elon Musk speculated, these are the future. Artificial intelligence can fail catastrophically in atypical circumstances, like when an individual in a wheelchair crosses the street. In this case, driving is more challenging than any other AI task because it requires making life-critical, real-time decisions based on the unpredictable physical world and interaction with pedestrians, human drivers, and others. We should deploy a limited number of self-driving cars when they reduce accident rates. Human-level driving is achieved only when this canary be said to have kneeled over. Artificial intelligence doctors are the third canary. AI already has the capability of analysing medical images with superhuman accuracy, which is a little slice of a human doctor’s job. An AI doctor’s responsibility would be interviewing patients, considering complications, consulting other doctors, and so on. These are challenging tasks, which require understanding people, language, and medicine . This type of doctor would not have to fool a patient into wondering it is human. That’s why it is different from the Turing test. A human doctor can do a wide range of tasks in unanticipated situations. One of the world’s most prominent AI experts, Andrew Ng, has stated, “Worrying about AI turning evil is a little bit like worrying about overpopulation on Mars.”
TiWorker.exe is the Windows Update Trusted Installer Worker process, a sub-process of the TrustedInstaller system utility. It’s also called the Windows Modules Installer Worker (WMI Worker), and it’s vital in updating your computer’s operating system. chúng tôi runs in the background, checking for available updates or downloading system updates.
The process may have high CPU usage when performing its responsibilities. But it’s unusual for chúng tôi to stay active in the background or consume system resources excessively. This tutorial highlights different ways to fix chúng tôi high disk usage in Windows 10 and 11.
Table of ContentsManually Install Windows Updates or Restart Your PC
Tiworker.exe may use system resources if there are missing or pending Windows Updates. Manually installing updates can fix the issue.
if there’s a pending Windows Update installation.
Rebooting your computer can also reduce TiWorker.exe’s CPU usage. Close your apps before restarting your PC, so you don’t lose unsaved data.
, select the
in the Start menu, and select
Open Task Manager and check TiWorker.exe’s CPU usage. Try the next troubleshooting solution if chúng tôi continues to use excessive system resources.Run the Windows Update Troubleshooter
The Windows Update troubleshooting tool can diagnose and fix issues spiking TiWorker’s CPU usage.
next to “Windows Update.”
The troubleshooter will scan your computer for Windows Update issues and fix them.
Close the troubleshooter and check chúng tôi CPU usage in the Task Manager. Run the System Maintenance troubleshooter if the problem persists.Run the System Maintenance Troubleshooter
The Windows System Maintenance tool can also tone down TiWorker.exe’s CPU usage.
Open the Control Panel, set the “View by” option to
, and select
on the sidebar.
Quick Tip: You can also run the System Maintenance troubleshooter through the Windows Run box. Press Windows key + R, paste %systemroot%system32msdt.exe -id MaintenanceDiagnostic in the dialog box, and press OK.
Apply repairs automatically
Run as administrator
Close the System Maintenance tool when it completes the troubleshooting checks. Restart your computer if the chúng tôi high CPU usage issue persists.Run the System File Checker
System File Checker (SFC) is a command-line tool that repairs and replaces corrupted system files. SFC can fix Windows Updates files causing chúng tôi to use high CPU resources.
Connect your computer to the internet and follow the steps below to run an SFC scan.
Press the Windows key, type cmd in the search bar, and select
Run as administrator
below the Command Prompt app.
Paste chúng tôi /Online /Cleanup-image /Restorehealth in the console and press
The command prompts the Windows Deployment Image Servicing and Management (DISM) tool to download files required to fix or replace corrupt files. The DISM command-line tool can also fix a host of Windows Update errors. Run the next command when Command Prompt displays a “The restore operation completed successfully.” message.
Paste sfc /scannow in the console and press
The System File Checker will scan your computer and replace any corrupt system file it finds. The file verification and repair process may take up to 30 minutes.
If SFC repairs any file, Command Prompt displays a “Windows Resource Protection found corrupt files and successfully repaired them” message.
Close Command Prompt, reboot your computer, and check if the file repair process gets chúng tôi working correctly.Perform a Clean Boot
A clean boot can help you detect apps or programs preventing your computer from installing a Windows Update. Clean booting your PC disables non-essential Microsoft services and starts a minimum number of programs and drivers. It’s similar to booting Windows in Safe Mode.
Perform a clean boot, enable one service at a time, reboot your computer, and check chúng tôi CPU usage. Repeat the process until you find the app or service spiking TiWorker.exe’s CPU usage. For more information, refer to our tutorial on performing a clean boot in Windows.Delete Windows Update Cache Files
Clearing Windows Update cache files can fix Windows Update installation issues and reduce chúng tôi high CPU usage.
Open the Windows Start menu and type
in the search bar. Select
Run as administrator
below the Services app.
Open the File Explorer, paste C:WINDOWSSoftwareDistributionDownload in the address, and press
Reboot your computer and check if deleting Windows Update cache files fix chúng tôi high CPU usage problem.Uninstall Conflicting HP Programs
If you have the HP Support Assistant on your computer, uninstalling the software might reduce chúng tôi disk usage. Some users fixed chúng tôi high CPU usage by uninstalling the HP LAN Assistant software.
These HP apps appear to conflict with chúng tôi and cause the process to use too much CPU. Delete these apps, restart your PC, and monitorTiWorker.exe’s CPU usage in the Task Manager.TiWorker.exe Isn’t Malware
TiWorker.exe is a genuine background process that runs when checking for new updates or installing downloaded updates. The troubleshooting solutions above should fix the chúng tôi high CPU usage issue. Scan your computer using Windows Defender or third-party antivirus if the problem persists.
Do not buy used iPhone or phone without doing this first! For anyone shopping for a used iPhone or Android phone, your top priority should be to check to find out if the iPhone or phone has been stolen or reported as lost.
The reason is simple; a stolen iPhone or phone that has been reported as lost may not work at all if the cellular carrier has blocked the device from accessing a wireless network, this essentially means that buying a stolen iPhone or phone could be a waste of the money (not to mention engaging in the trade of stolen goods).
The good news is the CTIA, which represents the US wireless communications industry, has setup a super easy to use website that allows you to easily check to find out if any iPhone or any smart phone has been stolen or reported as lost.
The website is aptly named chúng tôi and it works by running an IMEI, MEID, or ESN number through the database and it will report back if a device has been reported as lost or stolen.How to Check If You’re Buying a Stolen iPhone or Android Phone
This is a super easy two-step process, all you need is the phones IMEI number and you can run it against a central database setup by the phone companies:
Get the IMEI number from the iPhone or Android phone, you can also do this by dialing *#06# on the phone
Go to chúng tôi here to check and enter your IMEI number into the website
If the iPhone or phone is reported as stolen or lost, you should strongly consider NOT buying it and instead finding a different device to buy
That’s all there is to it, you can check up to five devices IMEI numbers per day to see if they are stolen or lost or not.
Always do this before you buy a used phone!
To be clear, there is absolutely nothing wrong with buying a used iPhone or smartphone – I have personally bought used phones myself on multiple occasions. I usually aim for refurbished iPhones with a simple return policy where if it doesn’t work for whatever reason right away then it can be returned easily. The seemingly too-good-to-be-true deals that are found on auctions, eBay, or craigslist are almost always too good to be true, a recent model pre-owned iPhone will never realistically sell for $100 or some low sum. If the price is too good, or too cheap, or the seller is sketchy, be skeptical. Always check the IMEI first.
Makes sense, right? So don’t skip this if you’re in the used phone market, you could save yourself a real headache and a waste of money. It’s likely this service won’t detect every single lost or inappropriately owned phone, particularly if they have not been reported as missing yet, but it’s certainly worth running a check through just in case.
Oh and one more thing; if you’re buying a used iPhone then don’t forget to have the prior iPhone owner delete their iCloud account from the device and log out of iCloud on the device completely and then reset it to factory settings. While you can remotely remove iCloud activation lock it is more annoying and it’s much better handled by the owner in person. Apple used to offer a way to check this online but that page has been down for some time, perhaps it will return in the future. Almost all good phone refurbishing services and certified resellers will reset the devices and make sure they’re not locked down, but it’s always good to ask and be sure.
What is a CPU? The CPU or Central Processing Unit is the number-crunching brain of a computer. Everything a computer does, from playing video games to helping you write an essay, is broken down into a set of mathematical instructions. The CPU takes those instructions and executes them.
The details of how it does this is, of course, much more complicated than that simple explanation. The most important thing you need to know is that the CPU is the main mathematical engine of a computer.
Table of ContentsThe (Extremely) Short History Of CPUs
The history of computing is long and complex. It also goes further back into history than digital technology, electronics or even electricity. An abacus is a sort of processor. So are mechanical calculators. The big difference is that these machines can only do one or a few mathematical tasks. They aren’t general purpose processors, which the modern CPU is an example of.
What makes a CPU a general purpose calculation device is the use of logic. In 1903 Nikola Tesla patented electrical circuits known as gates and switches. Using these circuits, you could build devices that perform logical operations, where you could have the machine act on certain conditions.
In the mid- to late- 1940s William Shockley, John Bardeen and Walter Brattain invented and patented a device called a transistor, while working at Bell Laboratories. The transistor is the basic building block of a CPU. Transistors are relatively tiny computer components. The transistor is such an important invention that the three inventors were awarded a Nobel Prize for it.
A CPU consists of one or more microchips. This is an important invention because billions of transistors can be packed into a single CPU. This creates incredibly powerful mathematical engines.How Do CPUs Work?
The entire principle of a CPU is based on binary code. Human beings tend to represent numbers using a system called base 10 or the decimal system. The place values of each digit in a number go up by a factor of ten. So “111” contains one hundred, ten and one.
Computers and their CPUs can’t understand base 10 at all. Transistors work on the principle of either being on or off. Which means the logic gates you build from them can also only work with these two states. This is why, fundamentally, CPUs run on binary code. This number system has different place values. Instead if 1, 10, 100, 1000 and so on, the place values are 1,2,4,8,16,32,64,128 and so on.
So in binary “111” would be 7 in decimal numbers Since you add 1,2, and 4 together. If any of the numbers are a zero, you simply skip it and add the place value of the next 1. This way you can express any decimal value. Just note that binary numbers are often read from right to left, so the “1” place value would be at the far right.
Let’s put it in a table to make it crystal clear:
Binary Place Values1248163264128256The decimal number 7 in binary111000000
Can you see why it adds up to the number 7 in decimal? Let’s do the number 23:
Binary Place Values1248163264128256The decimal number 7 in binary111010000
So 111 is “7”, but “11101” is 23 because the fifth place value in binary is 16. Pretty cool, right? You can express any possible number that can be written in decimal this way. Which means computers built from transistors can work with any numbers as well.How Are CPUs Made?
The production process of modern CPUs is also, as you’d expect, pretty complex. The basic process involves growing large cylinders of silicon crystal. Its semiconductor properties make it ideal for building a binary integrated circuit.
These large crystals are sliced into thin wafers. The wafers are then “doped” with another chemical to fine tune its properties. The nano-scale circuitry is then etched into the wafer surface using light using a process known as photolithography.CPU Design and Performance
CPUs are not all made equal. The first proper ancestor of the modern CPU, the Intel 8086, had about 29 000 transistors in its integrated circuit. Today, a processor like the Intel i99900K has just over 1.7 billion transistors. The denser the logic circuits of a CPU, the more complex and higher the number of instructions it can perform per clock cycle.
Hang on, “clock cycle”? Yes, that’s the other major component of CPU performance. A CPU runs at a particular frequency, with each pulse of the CPU clock a cycle of calculations are done. If you take the same CPU and double it’s clock speed then (in theory) it should perform twice as fast.
That 1978 Intel 8086 ran at 5Mhz when it was launched. That’s five million clock cycles per second. The Intel i9-9900K? It starts at 3.6 chúng tôi 3600 Mhz, with the option to ramp things up to 5000 Mhz when possible.
To add yet another wrinkle to CPU performance, modern CPUs actually contain multiple “cores”. Each core is actually an independent CPU itself. It’s typical to have at least four such cores these days, but lately the norm has been for mainstream computers to have six or eight cores. High end professional computers may have in the region of a 100 CPU cores.
Having multiple cores means that the CPU can perform multiple sets of instructions in parallel. Which means our computers can do many things at once without issue. Some CPUs have “multithreaded” cores. These cores can themselves handle two separate tasks each. In Intel CPUs this is branded as “hyperthreading”.
So the total performance of a CPU comes down to a combination of:
There is, of course, more to it than these four main points. However, those are the four main considerations for making a CPU perform well.The Role of the CPU in Your Computer
The last thing we have to cover is what job the CPU plays in your computer. It is, after all, not the only integrated circuit microchip in your computer. For example, GPUs (graphics processing units) are often even more transistor-dense than a CPU.
They need their own cooling and power supply, as well as memory. It’s like a small extra computer! The same can be said for the chips that control your sound, USB and hard drive traffic. So why is the CPU special? These are the main reasons:
It can process ANY instruction, a GPU only does certain types of processing
It ties all the other components together, pushing and pulling data to make your computer work
The CPU is involved with all work the computer is asked to do to some extent
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