cant access bios

tankcomander

Honorable
Dec 8, 2013
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10,530
I'm running a asus crosshair V formula Z MOB with a AMD fx-8150 eight core processor using a corsair h100i water cooler a cool master 850w power supplie and 16gb gskill ram and 2 amd Radeon 7800 series graphic cards and windows 8 64-bit . After updating my bios I can no longer access my bios and I get a code 66 when I reset cmos using the rear switch and try to restart I get code 99 and have to flash the bios to get system to boot windows also there is no post message anyone have ideas
 

tankcomander

Honorable
Dec 8, 2013
25
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10,530

Thanks I tried it outside the case same thing the system works fine in Windows just can't get into bios i get black screen and code 66
 

Quaddro

Distinguished
Code 66 was caused totally by the memories

Try reseating your memory.
You can also try one stick of memory at a time .. starting with the one farthest from the cpu.
Do you still get the error ?

if yes, then try replace your memory.
changing the memory kit usually resolved the issue