When I start my PC. At the "Starting Windows" screen it restarts and brings me to a error where I its recommended to run it. A

right. When it gets to the point where I can "Start Windows" normally and theres anotheroption that is recommended to do. When I press that recommended optionj it goes through a scan but cant automaticly fix it. But when I start "Windows Nromally" it goes to black screen after "starting Windows" and restarts my computer and goes to the 2 choices again. And the way all of this started was my PC just lagged and I couldnt press anything. I tried spamming CTRL+ALT+DEL but still nothing I waited for some time still nothing. THen I had to restart it and thats what comes next. I cant even reformat my windows cause I need to go throught he recommended setting to do it.
 
In the PM you sent you said that you ran a scan that found 400+ errors. What is the program that you used to run the scan and what type of errors did it find.

Was it a Virus Scan program, a Registry Scan program, a System Cleaner type of program, was it a program that ran scans before you were fully logged into windows, was it a program that ran scans without you telling it to???

I have no ability to know what damage may have been done without knowing what type of scan was run. Also there are many fake anti-virus and registry scan programs that are in fact viruses, so it could even be that type.