It could have been a bios issue... an older bios isn't programmed for certain functions... I had an Acer, and when my I updated my laptop... they had the wrong updates on the page for my Acer and I actually downgraded and lost function to my wireless card, the switch, the buttons on the front and 2 usb ports... ugh..!!! Now I'm gripin'... I called them, and they let me know I was using my one free support call, and there was no one there that could help me, it wasn't their fault I didn't get an OS reinstall disk with my laptop, and my next call would cost me 39 dolla!!! Bastards... anyways... have you checked the bios? ahem... lol.. back to subject.