HP laptop won't read burned CD-R's?

[Dil_l_on]

I've had my laptop for three years now, and all of a sudden any CD-R that has stuff burned onto it is read as a a blank cd. I put in a regular cd i bought at the store and it read and played it fine. Then i put in a CD-R that I've ripped before and it too was read as blank (exact same format as other CD-R's that won't work now). I tried uninstalling and re-installing the CD/DVD ROM in the device manager but that didn't work either. I hope it's not broken..help me please and thanks.