Disc cannot be read by computer

Okay well I recently got windows vista upgraded to windows 7 and since then, my laptop cannot read any DVD/CDs. Is this occur often? If so, can someone guide me to show how to dix this problem.
P.S. I ran the ‘Fix It’ program and it was of no help.
thanks.
Answer #1
See if the device is in device manager.
Answer #2
Well it is there
It is a TSSTcorp CDDVDQ TS-L633C SCSI CdRom Device
Answer #3
Yellow exclamation mark? If so, try installing the driver for it. If not, try installing your chipset drivers and rebooting.
Answer #4
Hmm something new just happened, I seen that last part of my message and i put a CD into my computer adn it worked! But only CDs. Hmmm that is odd.
Answer #5
go into device manager, and right click on your dvd drive, and press uninstall. Then at the top click search for new devices, and windows 7 should reinstall your drive.
Answer #6
Okay I uninstalled it, I went to the action tab and pressed ‘scan for hardware changes’ and it reappeared. I couldnt find out which button to press to make win7 to reinstall the drive.