Not suitable for each computer

After the positive experience with the 2 predecessors, I have bought the 2013 upgrade version for our PC and the notebook (both Windows 7 HP).
After the required reboot after installation is not started on the Windows notebook. It was a blue screen, the system had to be using system restore point reset. But that's not even the printer is always removed from the network, which had to be reinstalled after every reboot. The problems affected only the notebook, on the PC it runs flawlessly.
Despite repeated Nachfragens the Kaspersky support I have received no reply.
So I then formatted the hard disk, Windows newly plays Kaspersky returned and bought G-Data Internet Security 2013. This runs on two computers with no problems and everything works! Again as it should be.