Hi, I have a 2010 Mac Pro that has begun giving me a blue screen on some boots, so, thinking it may be due to something corrupt on the hard drive, I would like to reset. I don't have the discs anymore for the machine, so i've obtained the snow leopard 10.6.3 disc from the apple store. Anyways, when I attempt to boot from the disc or even a dump i made and put on a flash drive, it is getting hung up on the gray apple logo screen (with no scroll wheel on the bottom). I have used this method to reset the mac in the past, but now i'm just baffled at what is the problem. If anyone has any suggestions on how to reset the mac and get it to boot from the snow leopard disc, It would be MUCH appreciated!