I opened up my computer the other day to measure the amount of space in my case for a new graphics card I will be getting. I pulled out the power connector on my card by accident and put it back in. Then when I tried to turn my computer back on I couldn't get it to display anything on my monitor so I had to play around with the DVI cable and finally got it to work. Then when I turn on my screen I see that my computer has crashed and the crash message was something along the lines of a display driver crash. I restarted my computer and now the toolbar at the bottom of the desktop is showing up as it would in the windows classic theme and the audio drivers aren't working. Also, about every thirty minutes the screen will turn off then back on again.