I have had Windows 7 64bit Pro on my computer for around 10 months. I use an Upgrade version through my University that works exactly like a normal copy of Windows 7. I have had no problems with it until now. When I start it up normally and choose Windows 7 (I also have Windows XP pro on my computer) and after about 10 seconds my computer automatically restarts. I tried the Repair My Computer option 3 times and the Last Known Good Configuration twice with no success. When I start it up in Safe Mode, 7 works for about three seconds and then goes to a Blue Screen before restarting. I honestly do not know what is wrong with my computer. I have checked all of the internal connections and there doesn't appear to be anything unplugged or messed up with them in general. Again, I have never had problems with 7 before today and I did nothing on or with my computer recently that would elicit this kind of reaction from Windows 7. Any help would be greatly appreciated. Thank you.