[Kazuki Araya]

It's very likely that the Ransomware has also disabled/Infected all restore points, but see If you can perform a System Restore obviously to the date prior to the Infection.

If that fails (which I believe It will), have a look at the following links on how to remove It.

https://bestsecuritysearch.com/dharma-ra...s-removal/
https://sensorstechforum.com/combo-files...ore-files/
https://www.pcworld.com/article/3176592/...mware.html
https://www.pcrisk.com/removal-guides/10...ransomware
https://www.2-spyware.com/remove-dharma-...virus.html

Yes.. Cant Restore The Pc.
Look like option is use Spyhunters or STELLAR to bring down the Dharma Ransomware. But the software is not free.

Have a look around the net for SpyHunter, there's quite a few sources available with a serial/key.

i already found one. but i dont know how to using spyhunters with the Dharma Ransomware.
https://chcrack.com/spyhunter-crack-serial/
credit to vickych for sharing