Turn off the tablet completely.
Below are two reliable methods to reset your tablet to its original factory state. This is the easiest method if you can still boot into Windows. HP Pro Tablet 608 G1 Fabrika Ayarlarina Sifirla...
Release the Power button but keep holding Volume Down until you see the Recovery Menu . Turn off the tablet completely
Choose Just remove my files (faster) or Clean the drive (more thorough). HP Pro Tablet 608 G1 Fabrika Ayarlarina Sifirla...
Back up your important files to an external drive or cloud storage. A factory reset will erase everything.
Here’s a professional and clear write-up for resetting the to factory settings (Fabrika Ayarlarına Sıfırlama).