When I try to install the 64 bit version of 7 it hangs as soon as the monitor resolution changes, on a black screen. I can't hear the DVD spinning either. The 32 bit version works fine. My BIOS is newest version. I changed HPET to 64 bit. I googled around but everything I had referred to hangs after install. I tried a different download and burn and still the same result. Also tried a different monitor in case the refresh was too high or something. My CPU is a Intel e2180 the mobo is a Gigabyte P35-DS4 and the video card is Radeon HD3650. Thanks!