Quote: Originally Posted by DangerousDave2
Let's say it worked from a USB stick. What would the explanation of the original problem be in that case?
DVD media or reader.
Was not suggested because you have working DVD that installed before.
If Vista installs you can try running the DVD from desktop, or extracting files to desktop to run Setup as Adminstrator.
Be sure to choose Custom install to overwrite Vista partition, unless you want a dual boot configured.
If fail, then use Vista to update BIOS version, complete troubleshooting steps previously given.