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Could a USB device drain my CMOS battery?

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I just got home from work, and when my computer booted up, everything was back to default, and now it will no longer save. This obviously sounds like a dead battery to me, however they ususally don't just drain that fast. One thing that I did that I don't normally do is I left my HD-USB anttena plugged into the USB port. There was absolutely no power going to the PSU when I turned the machine off last nite as usual. So, can it drain the battery?
 
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No, it can't.
 
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Crap. I hope that the battery socket isn't screwed up...
 
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i had a similar problem with my dfi lanparty board it would not save the cmos and i actually tried three new batteris ulike you my mobo was new out of the box. well it ended up being a short circuit and so effective no power could be used from the battery cause the terminal was shorted i would use a volt meter to see if the mobo has current through your battery terminal
 
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If its an oldish board,clean the connectiors on the battery socket,they may have tarnished or corroded a little making a slightly iffy connection to the battery.
 
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