Problems installing any type of Windows

"Errors during a clean OS install are almost always hardware problems. Seriously!

Some ideas:

Make a memtest86 bootable cd and running a memory test for a few hours. This will ensure it's not faulty memory.
Run Prime95 in torture test mode overnight to make sure it's not a heat / stability / cpu issue.
Possible is bad installation media (DVD) or a faulty DVD drive. You could try installing win7 from a USB key -- copying all the Win7 install files to a large USB stick, make it bootable, and try that as well."

"I had a similar issue on a brand new computer. Tried changing the dvd, re-burning it, changing the dvd drive.. Always got the same problem. I also tried installing from usb (Formatted my ipod for it), but never got it to boot from it (I tried following all the instructions on the web)
At the end, I installed XP on the machine, just to prove to myself the drive was functioning, and the hard drive was not broken. The XP installed just fine. I then decided to give the 7x64 another try, and it just worked.
Have no idea why it happened, but at the end I got a working 7x64 on the new pc.
Hope this tip works for you as well."