My laptop has malware, a virus or both and then some problems. I was trying to fix those issues and decided to try and do selective startup to see if I could get rid of some of the problems-one being I cannot start safe mode. But, while I was there I looked at a tap that had a long line of number and letters and without thinking I deleted it. I knew immediately after I did this it was a mistake. But it's done. Now, when I turn on the computer, I get the menu about F10 for this and F2 for that and then it goes to a certain line and stops. My question, what can I put on a thumb drive to get back into windows to fix this. I saw a website called bootnow.com or something but I don't know if I'm on track or not. Any help appreciated.
Or, if someone could tell me what to research that would be great.