Hi, I purchased a PC from PC specialists 12 months ago and have run into this problem. I cannot reboot with the windows 8.1 disk. what do I do?
many thanks
Do you mean you can't do a normal boot from your hard disk? Or do you mean you can't boot the Windows installation DVD that came with the PC?
If you can't boot from the hard disk then boot the Windows installation DVD and select the "Startup Repair" and see whether that can fix your problem.
If you can't boot the DVD then you may have a more serious problem.
As SyderTracks said, what have you changed? Problems like this very rarely just happen, almost always something has changed. Nobody here will be judgemental if you think you might have done something stupid, but it's important that we know what has changed to cause this issue.