I decided to give Vista a try on my HTPC, but it wont boot from DVD!! However, if I put a CD in then it will boot from that no problem.
Ive made sure the boot prioriy is correct in the BIOS and have tried 2 DVD drives and different media.
The mobo is an Asus P4P800-VM with the latest BIOS (v1018)
Any ideas? Im totally miffed