Macbook Pro restarts every time i open Windows 10

Hello,

Ever since I updated to Windows 10 and Parallels 11 I have had soon many problems with my computer running extremely slow upon start up of Windows. My computer runs completely fine without parallels open. When I open Parallels, and start Windows it sometimes opens right to the log-in, other times (most) it takes a minute or too until i am able to sign on. Once I sign on, my computer either immediately opens to the windows desktop and i can use my computer fine and like normal.....or .....what normally happens is it takes nearly 5, sometimes up to 10 minutes before my computer is usable. I get a rainbow wheel, which then freezes, and if i try to do anything on my computer it slowly very slowly responds one bit at a time. But it takes so long to work that it is really annoying. If i happen to be listening to music it skips like crazy and i can't even stop it until my computer catches up and becomes usable.

Recently, my computer has started to do this new thing...where after i enter my password into windows, it opens up the desktop, becomes usable for approximately 30 seconds....and then freezes and restarts my entire computer. This has happened a few times and up until now after one restart, parallels and windows has been fine until the next time. BUT today, EVERY TIME I LOG IN TO WINDOWS IT RESTARTS MY ENTIRE COMPUTER.

So does anyone have a fix for this? My thesis is due next week and i really don't have time to travel to the nearest mac store and wait there for a day with the mac dude(or dudet). I don't even know if they would help, when I had issues with bootcamp they wouldn't help because they won't touch anything windows.

Thanks in advance for anyone who can help.