Everis E2004

Family member forgot his win10 login pass so I plan to factory reset. The issue I'm having is finding any info about these laptops so have a few Q's.

• Do they have standard addition of Win10 Home?. Having only 32mb storage I'm worried they may have a modded version. I plan on d/l'ing win10 iso to usb for a fresh install.
• Key combo to enter the Bios?
• Any other startup key combo's I can use?. I've tried F2/F8/F10 etc...