and I have no idea whats wrong with it

It loads up then at random times it freezes and dies, sometimes it doesnt even get to a windows screen. I have no idea if its my PSU, GFX Card, HDD or a virus/software conflict have you tried BOOTING into safemode?  or have you checked your BIOS settings or tried to reset the CMOS?I can't work out the button to choose the option for Safe zone as no option comes up on start up, how does ONE reset cmos as I can enter my bios easily.Your PC may be overheating. When you boot up, listen carefully to determine if you hear any FANS turning on. You can also try opening up the case to visually confirm if the fans are spinning.

With the case open, you can also try taking the RAM modules out and putting them back in firmly. Re-seating the RAM like this has been known to fix problems like the one you are experiencing.

When you say your PC "dies", does it give you a stop error (or "blue screen") with error codes on it?

no error, it just freezes, the screen stays the same but you can't do anything.it could be heat, or it could be a failing PSU.  My guess is that it is one of the two.

I DOUBT it is the RAM being seated incorrectly.  In my experience, the comp will not POST and will beep continuously if the RAM is not seated firmly.  It could, however be bad RAM.  

Revanash, do you have a good working PSU anywhere that you could switch in and test?   Quote from: Flip81 on October 15, 2007, 09:26:22 AM

it could be heat, or it could be a failing PSU.  My guess is that it is one of the two.

I doubt it is the RAM being seated incorrectly.  In my experience, the comp will not POST and will beep continuously if the RAM is not seated firmly.  It could, however be bad RAM.  

Revanash, do you have a good working PSU anywhere that you could switch in and test?