Shut-down issue

geo22

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Dec 22, 2011
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i built a computer about a week ago

ASUS M5A99X Evo
AMD Phenom II X4 965 Black
XFX Radeon HD 6850 Fansink 775MHZ 1GB
Western Digital Caviar Black 500 gb
Corsair TX750
G.SKILL Ripjaws X F3-12800CL9D-8GBXL 8GB 2X4GB
Zalman Z9 Plus

the only problem i have been having is it will shut off
i do not get a blue screen
the computer can just be sitting for 3-4 hrs
you touch a button etc it will shutdown
it does not do it that often
i have ran some benchmark tests
3dmark11 pcmark7 furmark 1.9.2
it has never shut down or crashed during these test.
i have noticed i was trying to access my bios it will not let me
if i tap delete during startup it will not start the screen does not change color
if you stop tapping delete it just sits there
i tried only tapping delete a couple of time i tried tapping continualy it makes no difference
if you let the computer start normally that is what it does
any suggestions
 

geo22

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Dec 22, 2011
153
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18,680

no ino somtimes itwill not recognize usb