Has never once failed to remove a virus from my computer. Run a whole computer scan.
“I contend that we are both atheists. I just believe in one fewer god than you do. When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours.” Stephen Roberts
You should try running MalwareBytes if you can get it to install. If it won't, download it from a friend's computer to a USB stick. From there, boot into safe mode by tapping F8 when you turn your computer on. You can try Safe Mode or Safe Mode with Networking to try and get updates, but if either of those won't let you run MalwareBytes, you may have to try SafeMode with Command Prompt or whatever it says. If it comes to that (and it may depending on the severity of that virus) you will need to enter some DOS-like commands to run MalwareBytes. If thats what is needed you can search up the commands yourself or post in the thread again. Alternatively, you can download the AVG boot cd ISO on a friend's computer and burn it to cd, then boot from that and run a scan. There are other options but the MBytes one is the best right now
I have seen some viruses start up in Safe Mode from time to time. Some of them are pretty nasty. I was cleaning one friend's computer and thought it wasn't going to run in safe mode, then it popped up and spammed a whole bunch of crap on the screen. If the OP is lucky that won't happen.