Troubleshooting Computer Freeze (Lockup) Problems
How familiar does the following sound? Your computer was working fine, but then suddenly started locking up (aka hanging or freezing), rebo
oting itself (crashing) or shutting down spontaneously? If you know only too well what I am talking about, then read on! Performing the simple steps below can fix the majority of lockup cases.
1. Check for recently installed software or hardware.
2. Run your antivirus program.
One of the first things to do in the case of sudden lockups is to run your antivirus program. Check your antivirus manufacturer’s website for updates and latest virus definition files. (This is absolutely necessary, outdated antivirus is not going to be of any use!) If you don’t have antivirus software installed – or if updates are unavailable – run one of the web-based antivirus scans that some major antivirus vendors like Trend Micro are offering for free. You can find a comprehensive list of available web-based scans and free antivirus programs on http://www.free-antivirus.info.
3. Run some good spyware removal tool.
If your machine is not infected with any viruses, it is still possible that it has some harmful adware or spyware is present. Download and run some good spyware removal tool such as AdAware or Microsoft AntiSpyware. Check http://www.free-antivirus.info for a list of free spyware removal applications.
4. Check for free hard drive space.
When no viruses are found, check out free hard drive space on drive C:. Make sure there is more than 20% of free space available; low disk space can lead to random lockups.
5. Check for overheating.
Overheating is another known cause of lockups. It can be caused by problems with fans inside the case, dust buildup, or other cooling problems. Make sure the power supply fan and CPU fan are running and free of dust buildup. You can check the temperatures inside the case by running Motherboard monitor
- make sure the temperatures are within the preset limits. Be very careful while cleaning inside the computer case (use plastic vacuum crevice tool) and NEVER OPEN THE POWER SUPPLY CASE as it contains high voltage.
6. Check the hard disk.
Check the hard disk – it is possible that its logical structure is corrupted. To check the disk for errors, right-click on the disk C: icon in “My Computer”, select the “Tools” tab, check all check box
es in the “Check disk options” field, and press the “Check now” button. It should ask whether you want to schedule the check next time you restart your computer – answer “Yes” and restart your PC. The check will be performed automatically after startup it can take a while, so be patient. The program will attempt to fix some pro blems automatically – however, if the hard disk is failing physically, it will need to be replaced. It is also a good idea to run Disk Defragmenter (located in Start Menu > Programs > Accessories > System Tools) to optimize data placement on the hard disk for increased performance and reliability.
7. Check the memory.
Sometimes random lockups can be attributed to the com
puter memory (RAM) starting to fail. You can test the memory by running Windows Memory Diagnostic that can be downloaded from http://oca.microsoft.com/en/windiag.asp. If memory problems are found, try re-seating the RAM (pull it out and plu g it back in). If it doesn’t work, replace the defective RAM.
8. Check for other hardware problems (advanced users).
More hardware-related problems can be diagnos
ed by running hardware tests from the Ultimate Boot CD that can be downloaded from http://www.ultimatebootcd.com. However, you should only use it if you know what are you doing – some programs on that CD can be dangerous when used inappropriately (for example, some of them can wipe the contents of your hard disk).
9. Update Windows and drivers.
The above steps will h
elp diagnose and eliminate the most common causes of lockups. Hundreds more of o ther possible scenarios need to be dealt with on a case-by-case basis, as it all goes down to your particular computer configuration. Asking on PC
troubleshooting forums/newsgroups should help you figure out solutions to not-so-obvious lock
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