I just recently bought a 7800 GS OC AGP and now my system won't boot. For my motherboard I have a MachSpeed (Same as Jetway it seems?) S755MAX http://www.motherboard.cz/mb/jetway/S755MAX.htm http://www0.shopping.com/xPF-M...hlon-64Bit-Motherboard For my PSU I have a POWMAX 400w Max LP-8800D http://www.powmax.com/8800D.htm Now, for my motherboard I set the AGP volts to 1.8v which is what I read somewhere that the videocard I bought needed. Now I can't even boot with that videocard. My bios for the S775 are A03 07-01-2004 I'm really bumming right now because I don't know if I bought a broken card on ebay (which I doubt I did because the guy seemed trustworthy. Or if my SiS chipset is not compatible, or if I just need to buy a new PSU. Please help.