Thanks for the help so far, I've looked at the cooling fans and they seem to be working, I have one on the processor and one on the side of the case (as well as the one for the power supply). I've been into set up and my CPU is running at c.56C (fan running at c.5100RPM) and my motherboard is at c.46C. Looking at the manual setting for temperature shut down these don't seem high but I don't know what temperatures are considered high. I also checked that the graphics card fan is in operation and it's also blowing air. Is there a preferred direction of air movement? For example the one on the side of the case seems to be blowing the air out of the case. If the CPU fan is also blowing air onto the processor is it not going to be of reduced effectiveness as there will probably be reduced mass air flow. I don't know, I'm just grabbing at straws.
At the moment I have one side panel removed and a desk fan blowing into it. Which is a very temporary measure, the fan is for me.
I did try a thorough disk scan but the system died half way through, I'll try again tonight. I did manage to clear out the _restore directory though and the trojan is gone.
The computer was still hanging last night prior to the desk fan and I haven't run the machine for long enough to see whether this has solved the problems. I'll see tonight.
If anyone has any other suggestions or answers to the above questions any answer is appreciated.
Regards,
Cool_Hand
My power supply is 350W
and my graphics card is an ATI 9500/9700 128Mb (with cooling fan)