Instruct: Classify a given review into positive or negative sentiment.
Query: doesn't burn on certain computers

I thought it was wonderful when these were on sale at Staples since Memorex is usually known for their wonderful quality and I've previously had wonderful experiences with the brand. But when I tried some of these cd-rs on my laptop, they wouldn't burn. The cd-writer would start preparing the cd for burning but when it got down to having the files written on the cd, the process would stop and give me an error message. It had worked wonderfully on my desktop computer, though- so I was convinced that my laptop's dvd/cd drive was broken-that is- until I managed to burn on files on some Maxell cd-rs. It is disappointing how I now have this stack of CD-Rs and I can't even use them on the computer I most frequently use.