Why all of a sudden won't the songs burn to the CD??

I burned two CDs last night! Everything was easy and I had no problems whatsoever! I TRIED to make two more CDs no more than 10mins later but I started getting this message that said " Windows Media Player encountered an error while burning. Verify that the burner is connected properly and that the disc is clean and not damaged." I haven't touched anything for the burner to not be connected properly so I dont know what could be wrong. I have tried using other balnk CD's but I just keep getting the same message! Whats going on and how can this be fixed? Please help!