Getting black screen on boot with ASRock 970 Extreme3

I am using ASRock 970 Extreme3 motherboard and AMD FX 4100 processor in my PC. I was trying to overclock my AMD FX 4100 processor and after spending some hours behind that I have got it working properly with at clock of 4.1 ghz. The default clock of my processor was 3.6 GHZ. Now after doing that my computer was running properly and then I have tried to raise North Bridge clocks little bit and after doing that when I restarted my computer at that time I only get black screen. Please help me to solve this problem.

Mention full system specification about your computer which will help me to give you solution. Have you tried to solve this problem by clearing CMOS in your computer? if not then I will suggest you to clear CMOS from your computer and then see whether it makes any changes or not?

i have overclocked my computer processor and after that it started giving me black screen problem. now after that I have turn off my computer and then removed power cord. After that I have open my computer cabinet and then removed CMOS battery. Now I have pressed and hold power button on my computer for some seconds. Then I have connected CMOS battery again with its original place and after doing that when I try to start my computer at that time it worked fine. You may also try this solution.

I have removed CMOS battery from my computer and then I have put it back on my motherboard again but after doing that also when I tried to start my computer at that time same thing happened.

Below is my computer specification.

• ASRock 970 Extreme3 motherboard
• AMD FX 4100 processor
• 2 X 2 GB RAM
• 500GB HDD
• ATI Radeon HD 4850 graphic card.

You have to try to start your computer with minim hardware components which is required. I will suggest you to remove one RAM stick from your computer and graphic card and then start your computer. now after doing that you have to start your computer and then see what happens.