my windows professional operating system does not recognize CDs put into the drive.the problem wasn't solved even after replacing the drive.everything was going fine a few weeks before and it suddenly developed such a kind of i have to change the system registry or anything else to solve the problem.after i inset the disk and click on the cd-drive icon it displays the message "please insert disk into dive F: ". 'F:' is my cd-rom drive.

please help anyone.BIG THANKS in advance