PC Crashes while gaming also!

[leeS72]

Hello Fellas,
I would like to say thanks in advance as any help would be welcomed.
The problem is my PC crashes when i play any games. It doesn't bluescreen it just shuts down!
these are the things i have tried:
I have cleaned the pc of any dust,
I've defraged, used CC Cleaner, I tried Whocrashed, I have re installed xp, checked all the drivers are up to date.

Today I used OCCT and the cpu/memory usage test read:
core #0 over maximum value, value reached 88 max value is 85.

Do I need more memory?

My Spec is:
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System Information
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Time of this report: 12/10/2012, 19:13:41

Operating System: Windows XP Professional x64 Edition (5.2, Build 3790) Service Pack 2 (3790.srv03_sp2_gdr.120821-0338)
Language: English (Regional Setting: English)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: Default System BIOS
Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 4600+ (2 CPUs), ~2.4GHz
Memory: 2046MB RAM
Page File: 1512MB used, 2453MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
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Display Devices
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Card name: NVIDIA GeForce 9800 GT

 

[djscribbles]

It sounds like the CPU is hitting 88 degrees C, which would indicate that it's overheating and crashing. Try applying new thermal-paste to the heatsink (clean off the old first of course).

 

[sliem]

I'm not an expert.
Some ideas: 1) see temperature, 2) get new RAMs

 

[leeS72]

It sounds like the CPU is hitting 88 degrees C, which would indicate that it's overheating and crashing. Try applying new thermal-paste to the heatsink (clean off the old first of course).

I put some new thermal paste on the CPU today, and so far so good, no crashes!
Thanks