USB Not Working Outside BIOS

Are your mouse and keyboard plugged into USB 2.0 ports 1 and 2?

There's no reason to plug a mouse or keyboard into a USB 3.0 port.

Did you download and install the Asmedia USB3.0 Controller Driver V1.16.12.0 for Windows XP/Vista/7/8/8.1 32bit & 64bit.(WHQL) device driver?

http://dlcdnet.asus.com/pub/ASUS/misc/usb30/Asmedia_USB3_XPVistaWin7-8-81_VER116120.zip

—Ga-z97x-sli (rev 1.2)
—i7 4790k
—USBs worked in bios
—As soon as windows load splash came on usb devices would go dead
—sometimes shutting off and returning to power I would regain the devices in bios others the short would persist through the restart and then I would have to clear cmos (pull bat or jump) and discharge capacitors (remove cable and hold power button)

I had this issue after replacing my water cooler due to pump failure....I found that the heat pad under the sink above my cpu had degraded as a result from the excess heat it received during this time. This caused oily leakage from the pad onto the mobo. I tried every possible software fix and some hardware tweaks and nothing. I pulled the mobo and inspected every spec of the board by naked eye and not even a hint that anything had shorted out. I looked closely at the sink and noticed the heat pad between the sink and the chipset was not only leaking oil but also had an “overheated” look to it. I pulled both the upper and the left sink and inspected both pads. The pad on the left sink was prestine, however, the upper one appeared to have bare spots. I replaced the pad but still not luck. I have come to the conclusion that something “no idea what” is causing the entire Universal Serial Bus to short out (specifically the data lanes because if I removed the usb device and plugged it back in I would get power back but no beep to indicate it was recognized and no functionality) and get locked out by bios or some other mobo power protection feature (so adjusting windows settings to stop USB ports from doing this will have no effect if it’s a mobo power protection feature). This left me with one of two options new mobo (unfortunately no one has the 1150 board I want for a reasonable price) or find an alternative way to supply the mobo an alternative bus for the data to travel on. I went with a 4port pcie to usb expansion card. Installed, powered on, booted to windows while retaining full mouse and keyboard functionality. This should not be considered a full fix just a temporary solution so you can use your system until you can get the new mobo. I spent 3 days trying to search every depth of the Internet for a “better” (meaning easy button) solution to this with no luck. (SORRY FOR THE CAPS BUT THIS IS THE ONLY WAY PEOPLE WILL LISTEN, I AM NOT ASKING FOR HELP I DONT NEED YOU TO TELL ME TO TRY THIS OR THAT I PROMISE YOU WILL NOT THINK OF SOMETHING THAT I HAVENT TRIED. THIS IS THE SOLUTION. MANY BOARDS HAVE SLIGHTLY DIFFERENT SYMPTOMS BUT IT SEEMS TO STEM FROM A SHORT ON THE UNIVERSAL SERIAL BUS)

*If someone has a way of finding the source of the fault on the USB (if you say inspect the ports or try using 2.0 instead of 3.0 I will literally send you a digital bi7ch slap. I repeat I have checked everything that can be seen and my board is built for usb 3.0) and the entire USB system seems to be linked 2.0 and 3.0 because changing the socket for the front usb 2.0 hub built into the case had no effect. And it’s never one or the other but all. Device manager shows the usb host controller is being disabled which would make sense if it had a fault and the mobo disabled the bus to protect the rest of the system and why reinstalling host drivers have no effect. Power use is very low in bios unless you force voltage and force cpu/gpu to run full bore all the time. Once windows starts to boot your power consumption increases with every process that gets loaded.
This leads me to believe it’s part of the chipset that got overheated and damaged potentially causeing the problem by shorting once it reaches a certain level of power consumption or temp.
Sorry about the novel but I’m willing to bet I’m not going to be the last one to have this problem and I wanted a valid solution available for them so they didn’t run into the walls I did. Hope this helps.

Software-no effect on problem and I did everything that’s posted(I didn’t change software so not likely to have caused the problem to begin with)
Hardware
Plugs-always seated
KB/M-swapped and swapped
CMOS-cleared
Bios-reset
Storage-swapped with known good system
CPU/GPU/RAM-benched
Fans-purring
USB-The system has 9 ports and the front ones I switched to all usb sockets with no change
Power goes to the ports as the KB/M light up when unplugged and then plugged back in but once you get to the login you don’t have usb. You add new usb solution to the mobo and then you can use the usb.
Solution-get a new mobo but know I like many others feel your pain.