waking issues

  1. G

    Windows 7 windows 7 not waking from sleep

    I have a dell xps 630 with windows 7 on it and when it goes to sleep it can not be woke up. It wont wake from keyboard and mouse or from pushing the power button. It wont even turn off if i hold the power button, i have to unplug it. Any ideas? BIOS or windows Problem??