I recently fixed a 2007 Compaq presario f700. After a week, I have a virus I think is very bad. It doesn't let me boot in safe mode. When it turns on, music plays on the login screen. When I log in, it plays the sound of a laughing Baby. It also installed about 8 programs I have never heard of. If I open ANY browser, my computer shuts down and restarts. It won't do anything accept display the desktop and a virus scanning software I didn't download. It was working beautifully with 4gb ram, tiny hard drive, and WINDOWS 10! It originally had vista. I have two of the same laptops, so I have all spare parts other than a motherboard. I took out the hard drive and replaced it and am scanning the computer itself. When the sounds were playing, my speakers were muted. Please help. I am getting a new laptop in July, but I want this one fixed.