Windows 10: Left Arrow Key Muting Sound And Down Arrow Key Opens Type here for search

I have a external keyboard of ewent the model is ew3112 i already restarted my computer btw this happend from no were i was watching youtube with my friends on watch2gether and i was to pull it back the video and just muted my computer sound Please help me

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down arrow key stopped working

My razor lycosa down arrow key decided to not respond at some point today. The other ones work and so does the numpad arrow if i turn off the numlock. Sounds like its just broken and im screwed, but any suggestions?

 

Left Arrow Key Gets Stuck? (Digitally)

I have a brand new Dell Inspiron 15 with Windows 10. Everytime I play a game, such as Wizard 101- while using the arrow keys to navigate my character, the left arrow key refuses to work whilst holding the 'up' arrow key. (So that I may turn left while
moving forward.) However, the right arrow key works perfectly fine. Any advice on how to fix this?

 

Left arrow key hits a random combination of keys

i don't know how to best describe it, so i'll start from the beginning.

i was playing Google Earth VR when all of a sudden the music gave out. i looked at my desktop, and nothing seemed wrong until i tried clicking around and opening my browser. for some reason, something was constantly muting and unmuting my computer's sound
and typing the | key, no matter where i went.

i attempted to unplug and replug the keyboard, no fix. uninstalled and reinstalled drivers for my mouse, keyboard, and sound, no fix. i attempted to go back to a back-up- which failed, for some reason- and i eventually did a soft reset and reinstalled windows.
nothing changed until i fully powered off my PC, unplugged it, and opened it up to see if something was lying on a cable *somewhere*.

now, everything seems fine... except that whenever i hit my left arrow key, it instead does what seems to be a combination of hitting shift, enter, 5, and the the backslash/vertical bar key all at once.