Problem with Litecoin core wallet

I installed the above software on my pc. I received a transfer to the wallet and switch it off.
After restart the computer, try to start Litecoin Core and receive a message:
"Cannot obtain a lock on data directory %s. %s is probably already running."
I restarted a pc several times it doesn’t help. And the task manager doesn’t contains some tasks with ‘litecoin’ name.
Please, help me.
Win 10, x64.

oi vc. tem carteira do litecoin? será que é golpe?


where did you got the software from?

the wallet closed by itself or you close it?