(See the best response by Orange55.)
I've been having issues getting Byond to start on my computer, i have clicked the icon, ran it in administrator, re-installed it, however it never opens, yet task manager shows it as a background process and I am not really sure what to do.
I had some issues with BYOND awhile back that displayed similar symptoms.

It turned out to be another background app that was causing BYOND to act up.

You might try double checking to make sure one of your other programs isn't interfering.
In response to Orange55
Could you give me an example of the background app that was causing Byond to act up? Just so it can be narrowed down.
In response to Coolfire0907
I believe it was called nahmic - an audio driver application.

I also disabled the software for my graphics drivers as well. (the applications; not the drivers themselves)

after those apps were disabled, BYOND started up fine. (hope this helps)
In response to Orange55
It's actually fixed now, thank you!
In response to Coolfire0907
Best response
happy to help :3