I have this CPU: Newegg.com - AMD Phenom II X4 940 Deneb 3.0GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM2+ 125W Quad-Core Black Edition Processor - Processors - Desktops And this video card: Newegg.com - SAPPHIRE 100251SR Radeon HD 4870 X2 2GB 512-bit (256-bit x 2) GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card - Desktop Graphics / Video Cards I put the 64 bit version in the drive and I got a non compatible error but my cpu says has the 64 bit technology. Then, I tried the 32 bit version and it worked, to a point. After nearly completing the installation, I got a black screen at the "completing installation" phase. I'm thinking my video card, or driver, are not supported, or its out of date. I'm kind of lost on where to go next. I can't boot in safe mode, nor can I reinstall xp. I also tried booting to cd and reinstalling windows 7 but that didn't work either.