Windows 7 - black screen, nothing helps

Hi I have Windows 7 on my Acer laptop. I did something with Windows Defender or Updater (Enable/Diseable) then when I boot windows only black screen with cursor and I can not do anything(ctrl+alt+del,5x-shift) nothing. I tried searching on Internet then I tried all things which I have found. Safe mode, repair mode but still only black screen. If I can at least run TASK manager but i cant. I have dual boot Windows7/Ubuntu. Ubuntu runs good so I think there are no hardware problem. Any ideas what can i do?

Did you try:
- Last Known Good Configuration in F8 menu yet?
- Try a System Restore to a date prior to the issue from a Windows 7 32bit Repair Disk. Also sfc /scannow - SFC /SCANNOW : Run in Command Prompt at Boot

- Last Known Good Configuration in F8 menu yet? - YES I tried, black screen too.
- If I dont have cd/dvd with it ?

See System Recovery Options
You can create a bootable USB with installation ISO or repair disk.
System Repair Disc - Create

I have created repair disk USB, boot it and black screen appeared. Any other method?

That doesn't specify much, can you be more detailed please?

Are you sure you booted with the USB? Did you see the System Recovery Options screen?

- When did black screen appear?

Did you try running sfc /scannow? or a system restore?

Yes I am sure it is always same ... Windows loading file then @Microsoft corporation with loading bar and then should System Recovery Options screen appear or Welcome screen or something else ... but only black screen with cursor

First time I see black screen issue in System Recovery.

Scan with Kaspersky Rescue Disk 10
and later https://www.comodo.com/business-secu...escue-disk.php

too late I have uninstalled it and install, but thank for help. F******g WINDOWS