Trying to format CD-RW using Windows 7__

Hi set2831,     

a. How are you trying to format the CD’s and DVD’s?
b. Does this happen with all the CD’s and DVD’s?

Try the below methods one by one and check if this help.
 
Method 1: Try updating the device with the latest drivers from the manufacturer’s website.

You must be logged on as an administrator to perform these steps.

1.  Open Device Manager by clicking the Start button, clicking Control Panel, clicking System and Maintenance, and then clicking Device Manager. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
2.  In Device Manager, locate the device you want to update, and then double-click the device name.
3.  Click the Driver tab, and then click Update Driver and follow the instructions

Check the link http://windows.microsoft.com/en-us/windows7/Update-a-driver-for-hardware-that-isnt-working-properly  “Update a driver for hardware that isn't working properly”
 
Method 2:    Uninstall all the other 3rd party burning software’s and then check if it’s working.
 
Check the link “Burn a CD or DVD in Windows Explorer” http://windows.microsoft.com/en-us/windows7/Burn-a-CD-or-DVD-in-Windows-Explorer

Similar issue: http://social.answers.microsoft.com/Forums/en-US/w7performance/thread/8cbe5778-8fdb-4272-9718-37b3367cd300 
 
Hope this information is helpful.
 
Umesh P - Microsoft Support