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USB suddenly stopped working.

Last response: in Motherboards
February 12, 2011 6:39:13 PM

Okay i was playing Starcraft 2 and all the sudden they stopped so i restarted my computer and they still don't. I don't know what happened, the usb gives off power and reads the device in it it just wont work. For instance it can read it when i plug more than 1 mouse in my computer but it wont work. I have tried just about everything, except reinstalling my OS, updating my bios ( I don't see why though cuz it has worked for me for over 2 years). I have uninstalled the drivers from the device manager, disabled and enabled them, and i checked to see if the setting in my bios are enabled and yes they are any more suggestions. O and a old p2 keyboard i have works just my usbs dont.
a c 715 V Motherboard
February 12, 2011 6:53:36 PM

Welcome to Toms Forum! :) 

In the Device Manager are there any {"?" or "!"} drivers listed? If so then right-click and Delete, rescan or restart.

Failure - Device Manager, expand [+] Universal Serial Bus controllers, Delete ALL entries and restart.
February 12, 2011 6:54:35 PM

no it all looks normal and i've done and looked at all of that
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a c 715 V Motherboard
February 12, 2011 7:11:35 PM

Are you having the same problems with the USB ports directly connected to the MOBO {I/O Shield} and USB Header(s) USB ports?

Is this a Wireless USB Keyboard/Mouse? ; moving USB locations is almost guaranteed to corrupt the registry, and duh bad batteries.

Are you using a USB Hub {if so remove it} or are all these a direct connection?

Also, a faulty USB device Keyboard, Mouse, Headsets can 'short' the USB causing this behavior. {Household animals often bite the cables causing shorts}

Q - What MOBO? In the BIOS I assume that USB is fully enabled:
USB Functions [Enabled]
NEC USB 3.0 Controller [Enabled] ; if applicable.
USB 2.0 Controller [Enabled]
USB 2.0 Controller Mode [HiSpeed]
BIOS EHCI Hand-Off [Enabled]
Legacy USB Support [Auto]

Trouble shooting ->
February 12, 2011 7:24:59 PM

Nvidia 650i Ultra and i got the Phenoix bios and its up to date and every thing and all of that is enabled and yes with all my ports i bought a pci card just so i can use my mouse but i would really like to find out whats wrong and fix it and i went to usbman and thier forum is down and am stilling looking through thier troubleshooter
a c 715 V Motherboard
February 12, 2011 7:33:48 PM

The MOBO has, as I read, 4 Rear USB @ I/O and 4 (2) USB Headers; 8 total.

You bought a PCI Card for what? If you pull the card do the USB ports on the MOBO work?

Just to rule-out corruption, run System Restore and choose a date prior to the problem.
February 12, 2011 7:37:06 PM

I mean i bought a 4 port usb pci card, i ran system restore like 3 times and yes it does have 8 total and all 8 dont work, if i plug my ipod in it charges, i can see the my mouse light up but it wont work.
a c 715 V Motherboard
February 12, 2011 7:44:43 PM

Then pull the card and see if the MOBO USB works, and if it does then the USB PCI Card is either bad or improperly seated.
February 12, 2011 7:47:21 PM

I mean that i bought the card AFTER they stopped working so now thats what am using but i would hope this is fixable so i know its not that.

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a c 715 V Motherboard
February 12, 2011 8:18:25 PM

Then there's a very good chance that something overloaded {fried} the MOBO USB controller chip. Power and Signal are two different things; powering but just not processing.

My first (2) posts correct just about every 'corruption' / BIOS issue that affects the USB problems. Running too many devices and/or a 'bad' one can easily burn-out the controller.

Apparently, the PCI Card clearly indicates that: 1. BIOS is okay, and 2. Windows is okay. Pretty much leaving the MOBO and what's been said as a viable solution.
February 12, 2011 8:20:14 PM

ok thanks so much i guess for now ill just use the pci usb card and save up until i can just upgrade my computer again, at least i wont waste my time trying different fixes. Thank You
February 20, 2011 4:09:02 PM

Best answer selected by babalol.