I’m currently experiencing a really bad virus.

First, I got a Windows Antivirus Pro, but managed to remove it and run Malwarebyte’s Anti Malware. After that, I thought it was all good, but my search results on google started redirecting to other things. Then, I got a Windows Police Pro. I removed the program files and fixed the registry so I could run programs. But there’s still something on my computer. Whenever i try to run an anti spyware or anti malware program, it halts abruptly and then I can’t open it at all. Also, my registry cleaner had the same problem. They all failed when they got to a cirtain part of the registry. AVG got through the registry without failing. I also have some suspicious processes:

msiexec.exe
mscorsvw.exe
b.exe

Also, when I was playing a game, I noticed a whole bunch of clicking sounds, as if the web browser went to another page. There was no web browser running at the time though.

Can anyone help?
Some more details:

I’ve tried SuperAntiSpyware and it won’t work. It always stops and crashes, even in safe mode.

For some reason, All my system restore points are gone.