Hi.. check to see if your cd/dvd rom is set as master. It should be set as slave.
Make things easy for yourself and try this on your hard drive.
- run your windows install disc (choose advanced for win 7 and vista), delete the 'C:' partition
- create a new one and type the size you want as your c: drive. eg. 40,960 MB. You only need 40-60 gb because games and demanding apps will be installed/run from D:. With way better framerates/results too
- Then create another partion which will use the rest and make your D: drive. Click to install on c: and after save/download all your drivers, music ect on D:.
- next time you need to redo windows, you only need to format C: ! fast and easy (