My currently old computer MSI G41m-p23  http://www.msi.com/product/mb/G41M-P23.html
It support overclocking, but i didnt overclock it. I set the easyOC to default setting.

the first time , my computer freeze , even my mouse also freeze . I dont have any idea, so i restarted it.
After That, after the windows 7 logo , it came out the damn blue screen , so i restarted agn 
After that in my BIOS, It says " WARNING! The default overclocking previously has failed"

What happend to my computer????

(p.s.: my computer freeze many times,i just dont bother it ,but now my computer even say default overclocking failed.)

What should I do?
Any solution ,guys?
Thanks