Processor is running at a consistant 90%. System is dual boot and runs fine with xp home. If I take out my graphics card (Radeon R4830) Win7 runs good. With the card installed, cpu runs excessive with around 90% going to system interrupts. Nothing showing in services. The attachment is a fresh install with nothing downloaded. Disk was formatted before this second install. No internet connection was running. Tried several different sites for radeon drivers. Tried other forums. This seems to be a problem for someone who knows their stuff. After a full day of trying, I'm ready for some help.