I just recovered my PC and got an alert which locked up my computer, to a point. I used task master to kill it, but have a question still. I have not been to any sites which I consider might give me some type of malware, but, I still got an alert telling me that someone tried to log in to my account, and I should call an 888 number. I know this is a toll free number which Microsoft doesn't use for this type of alert. Could I have some type of malware, whether Trojan or worm or anything detrimental to my system hiding somewhere in my registry? I used Malwarebytes Rootkit and found nothing. My Essentials doesn't display anything. I am just concerned there may be something hidden somewhere that has imbedded itself into my just recovered computer. I went through a recovery because I had just received an update that made my mouse quit working completely. Over and over again, I'd run a windows restore and finally found that the last update was the culprit, so I had no other choice but to recover my PC. I just want to be sure there's not something hidden that I have that's waiting to attack my PC. I'm on a Windows 7 Home Premium HP Desktop 8Gb 64bit OS