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Freeze PC

I recently upgraded my PC  with ASUS P5QC motherboard, 2Gb DDR2 RAM from Kingston, GForce 9800GT graphic card and new powersupply. I installed XP SP2, Symantec AV 10. and MS Office 2007 and connect to Internet via ISP.  PC is working fine apart from freezing after 2 -3 min using. USB mouse and keyboard are freezed. I have to press on/off button to restart again. I realy don't know what cause it, the other thing I'm thinking off motherboard is faulty, but I can't return it, because I bought via Internet.
1 Solution
You can test your RAM by using memtest:

Test Hard Disk by manufacturer:
>> I'm thinking off motherboard is faulty, but I can't return it, because I bought via Internet.

Does it consider second hand ??

You can replace back your previous PC parts and add in 1 new part for testing ...... if after adding 1 new part with no problem, add in another new part again .... untill the problem occur then you know is causing by this new part after adding in ...... Hope this help .....
try disabling / removing Symantec AV...
you can also disable other items at startup - use msconfig from the run box
then select startup tab, click disable all
to disable services, pick services tab, click "hide MS services" then disable all
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Was it freezing through the process of reloading the OS / applications?  A hard lock like you are describing makes me suspect hardware over software, but if that were the case you would have had problems even during the OS installation.
First of all, you can return your board directly to the manufacturer of the said board (it's called a RMA, check the manufacturer's website).

Second, the symptoms you have look like you might have a problem with your CPU overheating. You can download softwares that will tell you what is the current temperature of your board. If it is a problem with overheating, you might want to clean and reapply some thermal grease on your processor.
Check the fan and heatsink are connected CORRECTLY and no wires and interfereing with CPU fan movement.  I Agree with Zjadir. Sounds like overheating CPU
Itsa56Author Commented:
From my experiment and I concluded Motherboard is faulty. When I plugged mouse and keyboard USB to the USB port below PS2 port  the problem was fixed. It means if I use the other USB for mouse and keyboard were conflicted with other device therefore it was hung.

I would have thought that the USB ports are using the same IO circuitry and so if one goes the lot of them go.

It is possible that there is a misconfigured settingin the BIOS with regard to legacy USB devices and/or USB jeyboard/Mouse support.

Now that you have it going, that is great, but if you feel like experimenting more, see if the BIOS has a "Load FailSafe" setting and try that with the suspect ports again.

Most of the time, however, random freezes are due to excessive dust or CPU fan not working.  Thats why we jump to that conclusion.  Ive found that if one UCB port goes, then the whole lot to as I've mentioned.

Anyway, good to see youve got some movement.

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