Hi! I recently made a system restore because a program deleted some registry keys and windows didn't boot anymore. So the only option was system restore because I don't know how to install windows. The only problem was that is 2015 and the most recent point was 2012. To be more specific 05.02.2012. I know is crazy but I wanted my laptop back to life. Now I have applications errors and blue screens if I run new programs I just installed . And I believe the problem is Windows updates. Since I made the restore I didn't update anything. If I check drivers there is no exclamation mark. But also if I check for updates there are no updates. As for Windows update that's my biggest problem. If I check there are no windows updates. The last one were installed in 2012, but if I check it doesn't give me any updates. I think that's a big problem because I run 2015 programs on a 2012 laptop. What can I do to obtain all updates from 2012 to 2015? Date settings are corect. I checked even bios.