Touch keyboard does not work after installing Windows 8.1 Dell Venue 11 Pro 5055

Hello friends

I'm sorry to disturb you but I can't find a solution to my problem and I'm really struggling.

I have the Venu 11 Pro model:
Dell model T14G Reg Type No: T14G001

Since my installation of Windows 8.1 everything works except the touch, the touch does not work at all, yet the tablet is really new, very little used, i really need your help, please, i wish you that happiness, thank you in advance for guiding this poor man who does not find a solution,

Thank you everyone for your help to amateurs like me.

Thank you.