I was on YouTube looking for a certain file, and came across it. I downloaded it and it was a .RAR file. I clicked on it and inside it had an application called "install.exe". I clicked it and it brought up some errors and closed everything that I had opened. It then came up with an error and closed every program I tried to open. I realized I downloaded something malicious and rebooted my Windows 8.1. It booted like normal and once it loaded my user, instead of showing the Metro interface it...
Downloaded a file called "install.exe". PC now locked.
Downloaded a file called "install.exe". PC now locked.