I was trying to remove a USB Thumb Drive, and that's when it crashed. Also, when it booted back up after the crash, it said there was a problem with my antivirus. My antivirus is working though. If this crash pertains to a driver, please note that I installed the latest Graphics Driver and it was really buggy. So I reverted back to my old Graphics driver. I have not had a problem in a while, except for the Windows Mail app. This is the first time it has crashed in a while.