BSOD on Server 2008, possibly OC related

Hello and thanks for reading, I was doing some OC on both the motherboard (fsb, cpu and ram) and vga, and about after a week I got a BSOD, it had been a while since the system was running fine, and I had never found this stop code before. For now I've gone back to the normal non-OC configuration of the hardware as a precaution, but I would really appreciate if anyone could clear my doubts.

Facts:
- SO: Windows Server Enterprise 2008 R2 SP1 (x64); Installed about a yer ago
- Hardware has been working for about 4 years (K9N2 SLI Platinum, XFX GeForce 9500GT)
- System has thrown other BSODs in the past, no cause found (althought the oldest ones may have been related to a keyboard driver (that has been ridden of long ago)
- System was in a OC state when BSOD occured (normal and oc state CPU-Z links in the file)
- OC'd state had been thoroughly tested (prime95, memtest, furmkark) and used for about a week without any problems before BSOD occured.
- BSOD's code was 0x00000101