I attempted to OC my Intel I5 3570k this evening to 4.5Ghz. After saving and rebooting I am getting a Windows Error telling me to Launch Startup Repair. When doing this I am taken to the blue screen where it tells me a problem has been detected and windows has been shut down to prevent damage to your computer. PAGE_FAULT_IN_NONPAGED_AREA.
When I reboot and attempt to access my BIOS (I'm using a Gigabyte Z77-DS3H) it will either totally lock up when I hit my BIOS key, or it allows me to access the BIOS, and then abruptly "locks up" on me.
For future reference for anyone experiencing similar issues, I was able to resolve this problem by unplugging my USB mouse and keyboard and inserting a PS/2 keyboard only. After this, I was then able to access my BIOS again and reset my OC values to their default settings so I could reassess what I was doing. I believe I made an error when messing with my voltages.