FL310, I have already disabled all startup programs using msconfig, still no good though. Sometimes it doesn't even get as far as the desktop, it will freeze with a blank desktop. A other times shortly after star up with everything nml I see an odd pixel near the mouse pointer, it stays with it, I then know that very soon afterwards the whole thing will freeze. I'm awaiting reply from the suppliers T/S on what they want me to send back first. It has to be hardware as when I put my old PCI graphics card and 3dfx voodoo 2 back in all is well, then again.....it may not as it appears to be totally random. Thanks for all the inputs.