This maybe a hardware problem as Albert has suggested, but i would like you to try something first.
You symptoms are pretty much identical to an issue i had when trying to burn media to CD's.
I just want to know if you are attemping to burn using the same make discs? eg, you bought a spindle of 25 Sony CD-R discs and you are using them but you cant burn anything past a couple of tracks.
Sounds very strange, but it may actually be the disc and CD drive dont quite get on.
I have a Sony laptop that for some unknown reason will not burn a music CD past track 3 or 4 when using ones made by Memorex. I originally thought it was a hardware issue, as the first couple of burns i did on the discs were completed fine. But then i started to recieve the problems you are having. The only reason i found out it was something with the discs was when i tried to copy using a different branded one, which worked out fine. Tried again with Memorex and i got the error again.
I actually gave the remaining 14 or so blank CD's (id used about 9 trying to copy, but they were wasted through the error issue,they are CD-R which i use) to a friend who found that they worked fine when copying from there PC, Strange eh!
Every other make of CD since has burned fine, except for the Memorex ones.
So i suggest, if you have not already, to try and burn using a different brand of CD and see what happens.