Windows 10: Random event, system acts as if down arrow key is being held down

I have windows 10, have had windows 10 since release. This is a newer issue that started happening this year. I have swapped out keyboards, i have a new mouse, I do use an xbox one controller for gaming but always have. And for the last ehh.. year ish this has befuddled me. Its random in that i dont know what causes it, nor do i know how to fix it other than rebooting the whole system. I used to only notice this when i'd go to shut down for the evening after gaming and the start menu would be like down arrow key being held, so trying to click on the shut down button was a game of wack-a-mole. I have since noticed it happen on other applications, like i couldn't use the calculator earlier because it did this and i couldn't get it to activate any other buttons due to it wanting to just scroll through all options available on the calculator. I tried opening a photo in photo viewer and it started mad scrolling through all the photos that came after a down arrow function I've read other peoples comments about this similar issue but haven't found an answer or fix. While this is happening the game i am playing is unaffected by this event seeming to only affect Windows applications.

:)

 

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?

 

Computer has left arrow key constantly 'held down'

When I use the laptop, whenever a situation occurs where the left arrow key would have an action, the computer seems to have this key held down.

To explain (that wasn't very clear), if I'm on Facebook photo viewer, the arrow keys can be used to move to the next or previous photo. However, it feels as if the left arrow key is constantly down, as the viewer scrolls through all the photos. Another example
is that in any text field, the cursor runs through the text to the end.

This basically makes any text input impossible as I cannot go back to correct things.

This doesn't happen in perhaps the first few minutes of the laptop turning on, which suggests to me that it is software-related rather than hardware. Also, I have tried switching to USB keyboard and the problem still occurs.

I am running Windows 10 on a Dell Ispiron15.

 

Arrow keys in a state of being constantly held down

I'm making a game with Unity and using the left and right arrow keys to move my character. When I press and release the buttons however, they act as if they were remaining pressed down. I've checked for driver and software updates and there currently are
none. So how can I fix this issue?