Similar to many others on this forum, my laptop's been infected with Sirefef.y. The laptop's HP with a Windows 7 operating system. A few hours ago, I noticed that my Firewall and Microsoft Security Essentials (MSE) weren't working. I uninstalled MSE and reinstalled it. After running a scan, the scan detected "Trojan:Win64/Sirefef.y" and when I tried to remove it, I got a message saying that due to some error, Windows would be shutting down in 1 minute. Tried running some Panda Security software but because my system shuts down after 1 minute after every start up, I couldn't do anything. I tried to get into safe mode but regardless of being in safe mode, my laptop still shut itself down after 1 minute. While trying to figure out the problem, I tried to get into safe mode again but I found that I'm also not able to get into safe mode, despite having pressed F8 numerous times. I know this problem is very repetitive on this forum but I hope that I will be able to find a right solution that would fit my laptop and its settings. Thank you very much and your help is much appreciated!!