It's an NEC knock off. My girlfriend bought it about 2-3 years ago. It was fucking up big time so I replaced a few parts (well as many as I could) and reinstalled XP, but I can't find the sound driver for it. The beauty of it is, the company that sold her the PC didn't give her any media..no copy of XP, no copy of drivers or anything on CD-ROM. It's driving me nuts!!