if you're using a later version of windows, the f8 at load does not work anymore. there are several other ways to enter safe mode that can be found online with a quick search. this isn't a hardware issue at all. i know for a fact that windows 8+ has disabled the f8 at load, not sure about 7, but i think so. check it out online for how to enter safe mode correctly.
-hax0rmort
MOBO - ASUS ROG Crosshair V Formula-Z
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