Some spyware/parasites can cause this, the two above utilites can detect such and allow you to delete them
I think this is an OS issue, not a HW issue.
Periodically, both "Enter" keys on my stock Dell keyboard stop working (both the standard enter key & the enter key on the numeric kepad on the right). I have swapped in a known good keyboard, but the enter key continues not to work.
The system is a stock Dell desktop (1.8 GHz Centrino, Windows XP) with Dell keyboard, Dell monitor (motherboard graphics), Dell mouse, Dell 802.11b USB wireless ethernet adapter.
Sometimes, a reboot fixes the problem... and then it reappears.
In an attempt to fix this problem, I have uninstalled the keyboard driver & allowed the system to reboot so that Windows "finds the new hardware" and then installs a new driver, and reboots... this solves the problem for a while, but then the problem returns.
I'm at my wits end! Any ideas on what I might do to fix this issue?
Were both keyboards you tried usb?
I had a somewhat similiar problem with a usb keyboard (actually, I had NO functionality) on a home built system. A brief remedy was going into the BIOS and enabling legacy usb; sometimes reversing the process would fix it.
Then I found a recommended MS update having to do with usb that I applied.
Ultimately, it turned out a BIOS upgrade finally solved my problems. Hope something works for you.
Help, my PC with Windows 10 won't shut down properly
Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?