Yesterday I Had A Nightmare Laptop Crisis. After One System Restore Its Back To Normal. Too Good To Be True?

Well I’ll tell you everything that happened. So first, i got this random command prompt window that said -copied -copied. Then i got worried and i dled microsoft security essentials because my other software didn’t detect anything. Then after i dled it, i restarted my laptop and it would get frozen everytime i put in the password to my laptop. I then went into safemode as my computer didn’t freeze in safemode and tried to uninstall the program but it didn’t work. I then went into safemode with networking and dled and used spybot search and destroy, malewarebytes (already had) , avast anti virus (already had), and avg and they didn’t catch a single thing. I then ran msconfig and unchecked everything at startup and restarted but that didn’t do anything either. Still froze. Then i went to what i felt was my last option, a system restore. After I did that, now my computer doesn’t freeze at all and whatever I installed yesterday is gone. Everything seems fine like I never had a problem. But this feels way to good to be true. I know that system restore doesn’t do anything about viruses, but did I even have a virus to begin with?