Windows 10: Weird cmd prompt opening

So a weird cmd prompt opened and closes I recently downloaded a dodgy file but then deleted it I ran a malware bytes scan is there still a possibilty of it being a virus?

:)

 

Cannot open cmd prompt in admin mode

I am using win 10 pro. My initial problem is I cannot display list of wifi networks. I cannot open cmd prompt in admin mode. I've used all the trouble shooting steps on this site and nothing works. Short of throwing this PC out the window is there anything
else I can try?

 

.txt will open open in Command Prompt

I don't know why but no matter what I do .txt will only open in CMD prompt and I have right click and go to open with every time which is annoying cause I use .txts a lot for noting stuff down in.

 

Low ping from cmd prompt high ping in game

Now the ping times are normal again 35ms-38ms cmd prompt 41ms from pingtest site. Just tested it 20min ago with 0 bandwidth usage on the router's monitor and got 35-38ms cmd prompt 160-350ms from 3 different ping test sites. As far as I can tell its completely random, the cmd prompt latency numbers are always same.

I can live with this, I have for a long time now. I just want to make some sense of it.