Didnt work COPY\Paste buttons and Copy\paste settings

I have last version of LR classic 7.4 [ 1176617 ]

License: Perpetual

my pc

i7 6700k up to 4.8 ghz

16 gb ram ddr4

SSD 256 gb for ADOBE products

Nvidia gtx 1080

My pc can`t be bottleneck.

Hi guys. need help to much.

copy\paste settings didnt work at all. Fast combo alt+cnt+c\v, buttons in left and previous button too. If i press this buttons  - Nothing happens at all.

i didnt saw list of settings, when i want to copy to another photo, i cant choose because i didnt see window with settingas i want to choose.

After downloading ADOBE CLASSIC again, problem still didn`t gone. AFTER reinstalling WIN 10, broblem STILL DIDN`T GONE !

i didnt know what to do, need help.

already 2000 photos need to be done....