Trying to resurrect an older machine: AthlonX 4200+, 2GB DDR400, 160GB hard drive, 7900GT KO, nForce4 mobo.

I bought it with XP, and that runs fine, but I wanted 7. Installed Home Premium 32bit and the install went fine but when it boots from the hard drive after install it shows the Windows loading screen and then graphical corruption. Slightly diagonal static pattern... I can take a pic of it if anyone wants.

Just out of curiosity I tried installing the Win8 DP and got a similar problem: install went fine, but on the initial bootup it shows the loading screen and then a solid green screen that flickers every 20 seconds or so.

I'm pretty sure it's not hardware since the system runs fine under XP. Ideas?