Computer restarting when not in use

[biggietoyo]

Hey guys ive got a computer with vista on it, and it keep restarting whenever it is not in use, i never have a problem when i am using it but every morning when i wake up it tells me an error message saying it had to restart because of so and so, and my girlfriend told me yesterday that my computer restarted about 5 times all day yesterday while i was at work, and this morning i came downstairs to get ready for work and caught it just as it was restarting. here's the error message that is popping up for me:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.0.6001.2.1.0.768.3
Locale ID: 4105

Additional information about the problem:
BCCode: fc
BCP1: FFFFFA60050FF210
BCP2: 800000010004C121
BCP3: FFFFFA6008AF7AF0
BCP4: 0000000000000002
OS Version: 6_0_6001
Service Pack: 1_0
Product: 768_1

Files that help describe the problem:
C:\WINDOWS\Minidump\Mini030813-01.dmp
C:\Users\Brett Waye\AppData\Local\Temp\WER-141960-0.sysdata.xml
C:\Users\Brett Waye\AppData\Local\Temp\WER4F86.tmp.version.txt


not really sure why this is happening, I did a virus scan a few times and it all seems healthy, i just recently got this computer about a month ago to write some music with. if anyone could help me out by pointing me in the right direction as how to fix the problem it would be greatly appreciated, thanks!

Also, sorry but I wasn't sure if this would be classified as a software problem or a hardware problem because of the computer itself restarting, but i gave it a shot!