On Teclast F7 – I do recommend re-installing a clean copy of windows 10 in English version (not Chinese) using “windows media creation tool” on a USB. I also changed the SSD to a kingSpec 128 GB purchased on Aliexpress for $24. NO MORE FREEZING.
After doing that, I had to tweek some bios settings to avoid or minimize booting into UEFI: 1- Disable “aggressive LPM support” under chipset, south bridge and then sata drives – I think this gives more power to the SSD. I also disabled UEFI under Boot, and also put “new boot option policy” to “place first” – all under boot – not sure what that is but with all these tweeks in bios seem to improve things drastically. So now no more freezing plus it seems that I solved the frequent boot to UEFI instead of windows 10 operating system.