System failure due to CPU fan not working properly?

My computer wont boot up properley and it is closing down after a couple of seconds saying the above. I have a HP Pavillion PC. The CPU fan is working and not making any strange noises, I have tried using the steps recommended by HP but they arent working the system keeps shutting down beford it boots up for me to do anything..

This is easy to fix, your fan has too much junk like dust and lint collected on it if you take a small screww driver open the back and just dust off the fan with a light brush it should work like new again
just like a fan in your living room the cpu fan collects dust and too much clogs it up,
remember the dust is going to fly everywhere so don't dust it off on your bed, i used an old paint brush i had lying around and it worked just fine just remember to be gentle and carefull because there is a lot of sensitive stuff back there... this should work if you have anymore probolems feel free to ask anything else.

Check these three:

1. CPU fan
2. CMOS Power Management
3. Power connection of your CPU fan