Hi, For some reason, every now and again, my computer will boot from the Backup Bios rom. It uses all the same settings. I have run these settings through orthos and memtest and they are fine. I have been doing some reading up and heard of some people having Antec SmartPower's crap out on them . I dont want to see my Pc go down the drain . So what do you think?? It did this with the Ram I have now and my Corsair I had before. If I do need a new PSU what do people think I should get?? I was gonna wait till I got another 3870 for corssfire, but I'm not gonna wait if it means putting my PC at risk . For my current setup plus another 3870 I came up with a 650w PSU from extreme power supply calculator. Cheers.