New ransomware varient on the loose, Says your PC has been blocked by the metropolitan police and demands GBP(£) usually £75-£100, is different in some cases, usually depending on your country and language. Information(s) here For the varient affecting UK residents, look here for more elaborate information and removal. I removed this from a customers machine simply, not sure if it will be so easy if you've been infected. 1. Start up in safe mode (no networking or cmd) 2. Start MSCONFIG and head to the 'Startup' tab. 3. Search for the infected startup item, in my case 'fest0r_ot.exe', and UNCHECK IT, then hit ok. (You can also view the Registry key in msconfig, which you can manually delete, look under 'Location') 4. Restart your machine normally 5. Download and install any reputable antimalware scanner, I use malwarebytes anti-malware from here. 6. Run a FULL system scan including any drives that were attatched around the time of infection 7. Once the scan is complete remove all infections and restart your PC. Optional: Download and run a rootkit scanner just in case of hidden infection, I used TDSSKiller. Under NO CIRCUMSTANCES pay the money it demands, it will not let you back into your PC. Thanks, Dave.