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Gigabyte GA-Z87X-UD4H Intermittent USB failure with mouse and keyboard
I upgraded my system at the beginning of January with an i7-4770K in a Gigabyte GA-Z87X-UD4H with 16GB of G.Skill Trident X memory. Almost immediately after build, I started running into a problem with my USB ports. The primary problem is that my mouse will often stop responding for a few seconds, followed by the Windows USB disconnect sound, after which it will begin working again. At first I thought it was only occurring when I let my mouse sit unused for an extended period of time, but soon found that it could happen at any time and in any condition. In addition to the issues with my mouse, my keyboard will occasionally completely disconnect (all lights are off) and will remain unusable until I unplug the connector from the USB port and then reconnect. This latter issue has only happened once while the computer was running, but has happened during reboot at least five to seven times.
I have spent some time working through the issue on other forums and have already tried changing the USB ports the devices are connected to, updating my USB and other system drivers, disabling legacy USB in the BIOS, reflashing the BIOS, disabling Windows' ability to power down my USB ports, completely uninstalling and reinstalling all USB drivers, and even work through the general USB driver fix found on this forum, but none of these fixes have affected the problem. One suggestion I haven't been able to try is to disable USB 3.0 support, but unfortunately this doesn't seem to be possible as my BIOS version does not have an option to do this, and even if it did, I would much prefer to leave is enabled as I do use two USB 3.0 external drives.
Anyway, I'm really hoping to find some additional help in resolving the problem here as I have not been able to solve this problem elsewhere and many Google searches have not yielded a fix.
Thanks.