Decided to try using Knoppix. First time it booted failed on [Sound, Video, Input] said Killed underneath it. Second time a service failed but booted into knoppix anyway. 3rd time no problems at all so I messed around in there, tried using office some games what ever most stuff crashed alittle while after using them.
I agree with Niffler that a Live Linux cd can sometimes be a very good indication of how to separate a Hardware failure or a software related failure..In fact i wrote a small post dedicated to it..
http://forum.giga-byte.co.uk/index.php/topic,4332.0.htmlIn your case, the fact that Knoppix also had stability/install problems indicated some unknown hardware/BIOS problem..The advice you previously got about starting over and run stability tests could help you determine your problem..Even memtest as good as it is does not always find an elusive fault with memory modules..They are very tricky and touchy..The fact of charging up a small silicone capacitor and then recharging it when required is problematic in itself..That is why memory modules are so critical and cause so many problems..
Unfortunately, they are so woven into system stability that the memory controller(CPU) the BIOS, the mother board, and even the power supply all have an effect on system stability..They all have to work together in order to get a stable system...
Also in this case that if Knoppix was unstable indicates to me that you can leave your HD out for the time being because Knoppix works just from memory.. Sometimes hardware device failures months later (in your case) may have been damaged by overheating some critical part.. That is why I would start over with the basics as suggested by others and run all tests as you would with a new build ..
I wish there was a" Magic Bullet " but I do not see it..
Good luck,
jolphil