Sohc-5232k cdr cd-rw problem

Hi guys I am far from technically minded, and I have just browsed the forums for a while now just reading and learning, but now I hope you might be able to help.

for some reason my drive wouldn`t finish writing the lead out on a cd-rw, I left it a good 20 mins, the only thing I could do was turn off my pc. Now though after that it will not read cdr or cd-rw but is fine with pre-pressed musing and pc discs???

please help if you can I have been up all night trying to sort this.

ps, they wont work in dos either so taking it to be a drive problem???