Answer to "Why does it say contact system administrator or computer manufacture"I faced the same issue with my Lenovo G50. It all started asking me to update where I accepted and left it. It took a day still not updated so I removed my battery and started then it showed me that message in blue screen Then I did this and it worked..!!! *Press Ctrl alt delete ..... (1) make sure your laptop is connected to WiFi if it is previously connected it will auto connect. (2) then it started autoupdating using my WiFi (3) and finally got updated. It worked for me I didn't tried on any other laptop .