Hello, not sure if I'm in the right area.
AVG had a trial one-time fix for their PC Clean Up (Tune-Up?) program. I ran the program. My AVG panel popped up and there was a yellow with a few issues to be resolved. One was for Windows 8 never having maintenance. I am using Windows 10 (hate it). I had a moment of brain disconnect and said, "Sure, run the disc doctor." Well,the computer needed a restart, so I restarted. It got stuck scanning at 11%. So I used my husband's computer to Google the issue. Found an answer on the AVG tech forum. Let it go for a full hour (their suggestion) before giving up and doing a hard shutdown. Followed the advice to restart and repeatedly hit space bar to bypass the scan on start-up. That worked, I was up and going. The second part of their equation was to download the tool CheckDisk Mod the link is ( DO NOT OPEN, DOWNLOADS IMMEDIATELY - just inserting in case you've come across it before) www.avg.com/filedir/util/CheckDisk_mod.exe (DO NOT OPEN - IT DOWNLOADS IMMEDIATELY!)
I went to the link, clicked continue (step three of four) and waited for the message Work Done. This was to disable the scan on startup - so they say.
Computer was fine. Decided to play a game of Solitaire, games wouldn't open. I could click the selection from the start menu, but it acted like I'd done nothing. Figured I reboot computer.
Selected restart, computer shut down, blue light on computer lit up, no whirring noises like when it usually starts, monitor power light stays yellow (it's obviously not seeing that the computer is on - black screen - obviously). I shut down again, waited a minute and pressed the button again. No whirring, I think the fan is running, but no start-up whirs, no BIOS, monitor still doesn't register computer is on.
Please tell me I didn't hose my computer by running that application.