Hi everyone. I'm new here and I just started having this problem with my laptop this morning. I've never gotten a virus in years until now but today I noticed Microsoft Security Essentials wasn't working, and it only took that short amount of time to get a trojan. (Sirefef.P) Now, even if I press f8 and boot in the mode where it doesn't restart when Windows fails, it still restarts, on the clock about a couple minutes after I turn it on. Doesn't even matter if I log on or not. However, the rebooting problem didn't happen until after I uninstalled and reinstalled MSE. So for now I turned the laptop off. It can't run long enough to perform a full scan although I tried to remove the trojan. MSE calmed down and acted as if no threats were present once I cleaned it. Not sure if the virus is still there but the booting problem is. What should I do? I'm not tech savvy but I will follow any instructions to a T. I have Windows 7 64-bit. Thanks in advance.