Plugging In Notebook Computer Causes Stuttering

where my notebook starts to stutter after coming out of hibernate whenever the power is plugged in. The mouse doesn't move, the audio goes out, videos stop, and sometimes I get a black screen that disappears in ten seconds. Sometimes after the black screen I get a message saying my video driver recovered. I am running a nVidia 8600M GT with up-to-date drivers. The problems usually resolve if I restart but it's really irritating that I can't get out of hibernate without this stuttering. Switching back to Vista also fixes it. I've tried reinstalling drivers and reformatting with a clean install of Windows 7 neither of which helped. I didn't have this problem with Vista although I had another power issue in Vista (which I still have with 7) where if I put my computer into hibernate with the power plugged in, the computer wouldn't start again until I unplug it and take out the battery.