You have updated your Lark Ultimate 8i WIN tablet to Windows 10 and now the touchpad went crazy?
You touch it on right side but it makes clicks on left side? You even can not log into windows because there is no way to press any button on the virtual keyboard?
I know it and I did have the same problem and did try to solve it for a few months without any success. I did email to the Lark support and Microsoft support but no one did answer.
Fortunately I have solved this problem, I did find a proper SileadTouch touch pad driver.
Please, download the zip file and unzip files and copy them to the C:\Windows\System32\Drivers
(and overwrite existing files)
Let me know, please, if anything