Hi Nero.s-
I'm Kevin B. Windows user like you. I do apologize for the inconvenience, let me help you sort things out.
Are you receiving error message when you open those program?
Kindly press windows key + R
Type: taskmgr
Hit enter.
Does it open the task manager?
Or try to press CTRL ALT Del button at the same time.
On the screen click on task manager and see if it will open.
For command prompt, press Windows key + R
Type: cmd
Press Ctrl Shift + Enter.
It will open command prompt with admin privileges
Does both application will open? If not, try to restart the computer and check it again.
I await news. Have a blessed day!
Thanks,
Kevin B.
Independent Advisor