MSI P67A-GD65 boot stuck. Please help?

Concerning a i5 2500k CPU with all the P67A-GD65 motherboard.My old DVD RW wasn’t compatible with my brand new system thus I copied the installation files in order to drive D and went install.Then once it stated “restarting” I power down the computer and put the old HDD within the new method.It been effective fine and installed Home windows 7 productively.Anyway after some time when POST switched at my personal computer again, my motherboard was stuck inside a black screen having a _ cover letter and absolutely nothing else.Its stuck there from the moment and MY PARTNER AND I tried everything originating in resetting BIOS for you to checking most cables.What is actually wrong Flawed motherboard

Do you then have a high overclock This i7 2600K managed that once i tried booting in place 5 ghz.