Under Task Manager now, CyberLink Virtual Drive (32bit) is running but there's no J: drive detected. Strangely enough, my CDRW drive is no longer showing either.
Update: restarted my comp again and the other drives show but the problem still exists. Not able to eject.
Update: the CyberLink Media Suite software let me disable the drive, attempting to mount a different ISO onto the J: drive as disabling and enabling it before didn't change the outcome. Hopefully mounting a different ISO will fix the problem.
It's showing the loading cursor icon and has been for a minute or so though, so I'm not too optimistic.
Update: It showed not responding under task manager and so I ended it. New ISO is mounted and the problem has been bypassed. I'm not sure what the root issue here was but it's no longer an issue. I kind of what to replicate the situation to try to troubleshoot it properly but I'm relieved I'm no longer running into it at the same time.