Windows 7 - CD Drives Not Functioning

I installed Win 7 Home Premium and I am having trouble spinning up my CD Drives (both of them). They were working under Win XP... If I attempt to install a game, the CD does not spin up. HELP!!!

Dell Computer XPS 400
2.83 GHz Dual Processors
3.00 GB Ram
Nvidea GeForce GTX 500TI Video Card

Are they CD drives or DVD drives??please clarify.
Right click on computer-manage-choose device manager from left side panel.Check if your CD/DVD drives are listed under device manager and are there any yellow exclamation mark on the same.

If you do see yellow exclamation mark right click and choose update driver software.

Let us know how it goes.

Try this (1):
Your CD drive or DVD drive is missing or is not recognized by Windows or other programs
Your CD or DVD drive can't read or write media
The CD drive or the DVD drive does not work as expected on a computer that you upgraded to Windows Vista

Try this(2):
1) Shut down PC.
2) Physically disconnect the CD/DVD Drive.
3) Reboot to Windows with NO DVD drive.
4) Shut down PC.
5) Physically reconnect the CD/DVD Drive.
6) Reboot to Windows with DVD drive.
7) Check Device status.