Trouble w/ Philips PCRW804K

Im having trouble w/ my new CD-RW. I have had it 2 days, the first day it worked fine. I burnt 2 mp3 cd’s and copied 1. On my second attempt to copy a cd, i had trouble w/ underrun and TOC error. Can you help me w/ that? Also today, and last night it stopped picking up my blank CD’s. I know its just not the cd b/c i tried many. I dont know if its overheating fast or if its deffective. Please help me, and tell me if i should return it. Also is there any type under 150 you reccomend. Thanks a ton. b/c its driving me crazy!