This popup program you are getting IS a form of malware/virus and is telling you that something is going wrong. Microsoft or any other third party company that makes trusted malware/virus removal software NEVER tells you to call their number to fix your computer. On a different computer, put a portable version of a trusted antivirus and try to rescue your computer from further damage.
Hey,guys I'm Bobby,from Bulgaria.
2 days ago I started getting that pop up telling me that my computer is at risk and asking me to call tech support (855-896-3013).
Is my computer really at risk or is it just some sort of a nasty scam?