Thanks for all the replies, didn't get a chance to look at the thread last night (got lost in Liberty City
) and when I look today there's loads of responses 
I've been thinking about the changes that happened when I upgraded to vista and the only bits of hardware I changed were the hard drive and I added some more ram. Makes me wonder now if my board can't cope with 4 x 1gb of ram and an overclock....
It's either that or I dislodged something (like the heatsink) - I'll have to check it tonight. I'll have a look at updating the Bios too, but running vista shouldn't have any effect on that should it?
Thanks again for all the tips, any more things to check?


I've been thinking about the changes that happened when I upgraded to vista and the only bits of hardware I changed were the hard drive and I added some more ram. Makes me wonder now if my board can't cope with 4 x 1gb of ram and an overclock....
It's either that or I dislodged something (like the heatsink) - I'll have to check it tonight. I'll have a look at updating the Bios too, but running vista shouldn't have any effect on that should it?
Thanks again for all the tips, any more things to check?