Goddammit, I didn't do the update for the service pack 1 yet on windows 7, today it asked me to do it, and I agreed and let it do the whole operation.
Now when the PC starts, it does the update, which are 105.070 files, but it gets stuck all the time and I have to reboot again, only to find out that there's another error. This is what it says:
Error C0190003 applying update operation 8235 of 105070 (amd64_m...)
So I rebooted again, because it gets stuck, and came up with another error:
Fatal error C0190003 applying update operation 8562 of 105070 (x64_m...)
And after reboot yet another one:
Error C0190003 applying update operation 8643 of 105070 (x86_mic...)
So every time it seems to skip one error and go a bit further, ending up finding another one.
Don't know what to do now, have to leave, and didn't have time yet to google for the problem. I don't want to reboot like 100 times so that it eventually skips all the errors and finishes the 105070 updates.