Help please..Cant select first boot device.

[Matt190191]

Hi all hope you can help me with my problem I cant seem to select a first boot device my menu just freezes and does nothing I got my cpu and everything overclocked here about 20 months ago its an intel core i7 920 2.97ghz overclocked to 4.0ghz at the moment i have it at 2.97ghz my motherboard is the

Ultra durable 3 GA-EX58-UD5P/GA-EX58-UD5
Motherboard

any help would be greatly appreciated

-Matt