I can boot my computer off a home-burned-from-ISO-image Windows 7 (x64 or x86) installation CD, without problems. It's a Quad 6600, 4GB RAM, 8800GT and most of the time runs Win7 with no problems.
However, if I boot off a CD containing Ubuntu (10.04 or 9.something IIRC), or a recovery disk created with Acronis True Image Home 2010, it:
- starts to load the OS from the CD
- then hangs
- ... and I have to reset.
I've tried all these CDs on another computer, and they boot up into Ubuntu or Acronis respectively with no problems at all.
Any ideas what to look for?
Sorry this is a little vague but I have no idea where to start, really ... if there's more information needed I'll edit the question.