Sudden loss of all USB

[Ugmore Baggage]

I reinstalled windows and in the process of installing drivers I lost all power to USB. Device manager indicates that all is well but nothing lights up (ie mouses) and as far as I can tell there is no response.

Any similar experiences / ways to fix this?

[Cyberwiz01]

is this onboard usb or is it a usb expansion card. Because i have had issues like that back when i had a usb pci card in a cheapo Pentium computer. The usb would go out on me for no reason at all.

[Ugmore Baggage]

They're onboard. All 4 that have sockets on the mobo plus 2 that are in a bracket that's attached to the mobo. I don't have any PCI USB cards. I checked device manager and it says there are no conflicts and even lists an amount of power available to each.

[Cyberwiz01]

I dunno thats pretty strange. Maybe theres a problem with the mouse you are using?

[XunknownX]

Can always check your mobo manufacturers website to see if you have the latest drivers for it. Also, did you check in the CMOS setup...make sure USB is enabled? I set my g/f's comp to high performance in the CMOS and it turned off the USB. Well, she has a USB keyboard so it took me a few minutes to figure it out.

[doodah10]

USB ports being inoperable has happend to me several times. I almost always use the PS/2 ports. I have a Soyo board that disables the USB ports everytime you enter the BIOS. I have to be sure that I enable it everytime I make a change. Ive had machines that wouldnt let you in BIOS or safemode if the keyboard was plugged into the USB. I RMA'd an Asus A7N8X board because it wouldn't boot with anything in a USB port. I had to move the mouse and keys to PS2 and pull the printer and joystick connections to boot and it would lock up if I plugged in after boot. It was working fine untill after a blue screen crash.