It seems you guys have your heads screwed on the right way so I bring you an issue that came up today.
I just got home from work and both my keyboard and mouse aren't working. I hard reset the computer and plugged in an old PS/2 keyboard to test and it worked fine.
I've navigated to the Device Manager and all of the USB ports (labeled Intel(R) ICH10 Family USB Universal Host Controller - 3A3A through 3A39) have a yellow exclamation mark on them. 3A37, however, does not. Also, USB Root Hub seems to be fine.
I've also noticed that my Realtek RTL8168C(P)/8111C(P) Family PCI-E Gigabit Ethernet NIC #1 and #2 are both listed with a yellow exclamation mark.
I checked recently installed updates through Windows Update and there are several listed:
KB890830 (the only non-Security Update for Windows 7 for x64-based Systems, being a Windows Malicious Software Removal Tool itself)
I did a System Restore back to early yesterday before those updates were installed. When I checked update history, those are still showing. I also tried uninstalling the Intel USB drivers
and when they tried to reinstall, the computer locked up.
So, under the assumption that none of the about was vague in any way, has anyone else been having an issue? Do you think it's Windows Update related?
Not sure where to go from here...