Have you met? Top 10 most prone to PC disasters (1)

Question 1: The computer fails to boot
Possible cause: The computer cannot be started for a variety of reasons. Find out if the problem is caused by hardware or software to help solve the problem.
Workaround: You will have to play a big detective Sherlock Holmes to find out the abnormalities of the computer. Do the following:
1. First: Check all cables (including the power plug) to ensure that all equipment is properly and securely connected together.
2, next, check if the power is turned on. Listen to the sound of the power supply fan and whether the hard drive is working properly. If you haven't heard anything, you may need to replace the power supply. To determine this, consider using a power test device such as PC Power and Cooling to test the power output. Of course, before you unload your computer, you should first check the power supply in the room and try to start other powered devices to ensure that there is no problem with the circuit.
3, if the power supply is normal, but the screen is still dark, try to connect another monitor to the computer (you can borrow one if necessary) to determine the problem is not the monitor. If the monitor is working properly, look for a video cable and still have no images? If the hard disk can work normally at this time, it is very likely that the graphics card has failed. To replace the new motherboard, please refer to our article "If you replace the graphics card", or use the motherboard's integrated graphics, if the motherboard has this feature. When the chassis is turned on, check if all the fans are running normally after the power is turned on, and the computer may be overheated.
4. If your monitor is working properly, but the hard drive is not booting and the display does not have any images (or you can see the image but the computer cannot be booted by self-test), consider resetting the CMOS. Turn off the computer, unplug the power, and then put on anti-static gloves, etc., and remove the battery from the motherboard. Then wait for about five minutes, check your PC user manual or visit the manufacturer's website for information on how to reset the CMOS settings. After the setup is successful, restart the computer to see if the problem is solved.

5. If the computer still fails to boot, the culprit may be a broken memory. Remove one memory at a time (or replace it with known normal memory) and reboot after each replacement. In addition, you can create a free MemTest86 boot disk on another computer and use it to select the memory stick.
6, if the above methods do not work, it may be that the motherboard or CPU is broken, need to be replaced (costs of 80 to 300 dollars or more). However, at this time, the data on the computer may still be intact. Just connect the hard disk to other PC hosts, and you can take out the data. You can consider going to a computer repair shop to ask someone to fix the computer, which is more cost-effective than changing a new computer. If you are using a laptop, the repair shop may be your best and only option.
What should I do if the operating system fails?
The chances of running into a software problem are much greater than the horrible computer hardware failures mentioned above, such as Windows failing to start or anchoring at startup. Next, tell you how to deal with operating system problems.
1. Start in safe mode. Press a specific key when Windows starts to enter the boot menu and select the safe mode. Usually, when you choose safe mode, Windows will try to fix it, then shut down and start normally. If you have Windows Vista installed, you can try selecting "Repair your computer" from the boot menu (if you don't have this option in your boot menu item, look it up on the Vista installation CD). You will have many options to fix your computer, and "Startup Repair" is definitely worth a try.
2, still can't start normally? Try "Last Known Good Configuration" in the boot menu, which is especially useful if you have recently changed hardware or drivers. If the computer is successfully booted, please replace the newly installed hardware (possibly with compatibility issues) and "return the driver" in the device manager. Right click on "My Computer" ("Computer" in Vista), select "Hardware" (Windows XP), and then select "Device Manager".
3, if you can start the computer in full mode, but can not enter the system in normal mode, you can try to use System Restore to back up the computer to the last normal working state (Windows XP select "program"," Attachment, "System Tools"; if it is Vista, click "Start", enter "system", and then select "System Restore" from the program list). After downloading the update file via automatic update and installing it, the computer may become unstable. You can change the default settings to avoid such events. In addition, you should also run anti-virus and anti-spyware software in safe mode.
4, if the computer still can not start, it is very likely that the Windows system has a big problem. Try booting from an emergency CD such as the Knoppix disc or the Emergency Boot CD. They can help you find out if the computer can still be booted or not, and copy the critical files from the hard drive.
5. If the computer still fails to start at this time, reinstalling the system may be the only feasible method. Use the standard Windows installation CD and the data on the hard drive can be saved. Some PC manufacturers also provide a repair CD that can be used to secure the system while keeping the data secure. Check your user manual to see if it has the relevant features.
To avoid recurring problems: Computers often fail without warning. You can: enable system restore, keep the system repair CD, backup common programs for reinstalling the system, and often back up the system. Use disk mirroring software, such as Acronis True Image 10 for $50 or Norton Ghost 10 for $70, which makes system and data recovery easier. And if you can, it's a good idea to have a spare computer. You can use a spare computer when your usual computer fails.