Testing Hardware for Failures

docff

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Jun 27, 2014
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Over the past year my computer started acting up(getting slow,crashing,not responding,taking a hell lot of time to do even the simpliest stuff randomly etc.),so I thought it was time I formatted it thinking that would fix it.

It did not,I am still having these problems so I guess it must be some hardware failure.
I have already run MemTest86+ for 8 hours straight and showed no errors and my HDD is 100% healthy(checked with HDD Health) while my CPU won't exceed 70C even when stress tested with LinX.So my guess is the GPU (overheating when stress tested for only two minutes to 90C) or some motherboard failure.

Could you please recommend me some free programmes to test my system?

Thanks in advance.

System Specs:
OS: Windows 7 Professional with SP1 64bit
CPU: Intel Core i7 860 (OC'ed @ 3.3GHz)
GPU: AMD Radeon HD 6870
RAM: 2x4GB
Motherboard: MSI P55-GD65
HDD: WD Green 1TB 32MB Cache
PSU: 620Watt