1. Start - CMD(ako spravca) - sfc /scannow

2. 
Ak sa neda nainstalovat SP1 pre Win7
Dism /Online /Cleanup-Image /CheckHealth
Dism /Online /Cleanup-Image /ScanHealth
Dism /Online /Cleanup-Image /RestoreHealth

3.
Spustit IE
otvorit stranku: http://catalog.update.microsoft.com
alebo: jdem.cz/ccdm87

vyhladat aktualizacie a nainstalovat:
KB3145739, KB3135445, KB3102810