Trying to track this down. 3 boards all same problem. Rampage IV Extreme, Z87 Pro, Z97 pro. All boot and function correctly but all lose bios and time settings if power is shut off. If power is maintained, sytrms boot and reboot normally. I have verified cmos battery is supplying 3v to board. 8 pin bios chip has continuity to ground but no voltage to vcc pin. I assume that's the pin that maintains the settings with power to bios chip. How do I track this down? What voltage do these bios chips require?
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You should be able to read the BIOS Chip thats on the motherboard and look into datasheet. There should be listed what voltage the chip needs. -
I guess im not really lookig at this correctly. Apparently the bios chip gets 3v when it's powered on and indeed it is. I always assumed that it should have voltage when board is unplugged. I ordered a bios chip for one of these boards to see if that isn't the issueComment
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