Hi Naxicoy,
Check your "Services" screen again. Scroll down to the Windows Defender services.
You will probably find Windows Defender Antivirus Service is missing.
Kaspersky is probably involved. Have you tried to access "Windows Security" since
Kaspersky has been installed?
If you want to run Windows Defender, you will need to "completely" uninstall
Kaspersky. By running its "removal tool" after uninstalling it. It sounds like it
is malfunctioning anyway.
If you intend to continue to use Kaspersky, Windows Defender will only function
in "passive" mode. Meaning it can only be used for scans. You place it into passive
mode by turning on the Windows Defender "Periodic Scanning" switch. The switch
is located on "Virus & Threat Protection". When a third party antivirus is installed,
the switch is located below Ransomware protection. If you click "Windows Defender
Antivirus options" the switch will be revealed.
If you uninstall Kaspersky, and Windows Defender continues to exhibit a blank
"Security at a Glance" screen, please see the following link.
The "copy" procedure has been shown to work, by other "OPs". If you don't have access
to another PC, you can download a copy of WinDefend from HERE
Instructions are included there.
Good luck, Glen