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New mobo, now the USB plugs don't work

Last response: in Motherboards
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July 31, 2013 8:24:23 AM

bought a new asus m5a78l-M lx plus and now the computer plugs in and turns on just fine but the USB powered mouse and keyboard won't work when plugged in to any USB port, even the I/O panel. They don't even light up like there is any power going to them.

could it be the BIOS has USB ports turned off or is it likely the mobo needs to be RMA'd? Any suggestions are greatly appreciated

More about : mobo usb plugs work

a b Ĉ ASUS
a b V Motherboard
July 31, 2013 8:30:10 AM

Yes you need to turn them on in the Bios, it seems they are disabled.
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July 31, 2013 8:39:48 AM

Azrael47 said:
Yes you need to turn them on in the Bios, it seems they are disabled.


alright we'll pick up a ps/2 keyboard at Fry's and see if it works
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July 31, 2013 2:06:27 PM

ps/2 keyboard didn't work either, I don't get whats wrong
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Best solution

a b Ĉ ASUS
a b V Motherboard
July 31, 2013 2:09:32 PM

Plug the USB keyboard in your front panel USB headers then boot up to the Bios and then enable back panel (I/O) USB ports.

It is very rare that a PS/2 keyboard doesn't work.
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July 31, 2013 8:12:42 PM

Well we picked up a ps/2 keyboard and we are still having problems, in the boot menu the only option we can choose is delete to get the BIOS menu, and thats the only option that does anything when pressed. Once that is done though now it gets stuck at Initializing USB Controllers and everything freezes

Should I just ask for a refund because this is getting ridiculous, I've never had these problems with a motherboard before
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a b Ĉ ASUS
a c 103 V Motherboard
August 1, 2013 2:13:17 AM

If the board is in a case, take it out and place it on a non-conductive surface. Clear CMOS (Clear RTC) and power up with a bare minimum of components (no USB devices) and a single memory module. See if you can get into BIOS and if the PS2 keyboard works for navigation. If not, I'd suggest RMAing it. If the board was in a PC case, check to see nothing shorted against the board from the case or the CPU cooler.


Out of interest I'd include a parts list here as well (include memory module part numbers).
-Raja
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