computer won't start after removing kaspersky

[bahram]

I had an old version Kaspersky Endpoint Security 6.0 for Windows 7 in one of our company PC's, so I decided to remove it and install Kaspersky Endpoint Security for Windows (11.0.0) (Kaspersky Security Center 10 Network Agent version 10.4.343) in windows 7. after i remove kaspersky 6.0, a pop up windows appeared in screen and said to remove completely you should reboot computer and after rebooting, the computer won''t start and goes to recovery error screen, and when i select start windows normally, the computer will reboot again. what should I do?