You can get rid of the splash screen by going into the bios, it has appeared because you have reset all the bios settings to the default option.
As to why you got the original error is a mystery.
I have had the error but I overclock my CPU and RAM. The fan running at high speed, which one was it? it may be nothing more than a build up of dust.
If your not frightened by opening the case, a soft brush and a Hoover will get rid of any dust build up.