From the CPUID information you provided, it doesn't look like it is overclocking, the clock speed, multiplier, FSB, and voltage look pretty normal. I'm afraid I can't help you too much here, my experience is with overclocking Sandy Bridge chips.
Try holding down del key at bootup or refer to your motherboard manual. If you do a bios reset and check your temp to make sure that your coolers are position right, your system should be good to go. Still can't get into bios? When your system boot there might be a screen telling what keys you can push, but it goes away really fast. Good luck.
Hardware Monitoring : Fintek F71882FG
+3.3V Voltage : 3.38 V
Processor Voltage : 1.15 V
VIN2 : 0.06 V
VIN3 : 0.18 V
+5V Voltage : 5.17 V
+12V Voltage : 12.41 V
VIN6 : 1.84 V
VSB3V : 3.36 V
VBAT : 3.33 V
TMPIN0 : 27 °C
TMPIN2 : 36 °C
Processor Intel Pentium : Sensor DTS
Core 1 : 42 °C
Core 2 : 27 °C
Hard Disk Monitoring : S.M.A.R.T
Hard Disk SAMSUNG HD322HJ : 32 °C
Your temp are fine and you are not overclocking, so this is exactly what you have to do.
1. Unplug your system
2. Use a jumper or a paperclip to clear your cmos
3. Remove your motherboard battery for a bit
4. Replace batterry
5. Power your system
6. Boot system
To clear cmos look for the 3 pins sticking out of your motherboard, there might be a plastic piece (jumper) and it should be labeled cmos or refer to your motherboard manual. Just simply touch 2 pins, top or bottom refer to your manual, it doesnt hurt if you did both. Good luck.