''press esc key for startup menu''

[bhinda007]

i reinstalled windows 10 in my leptop after that when i start my leptop it shows the pop ''press esc key for startup menu. and also when i disable legacy option from bios setting or save default setting  then my leptop shows then another error that is

''Boot device not found''

''please install an operating system on your hard disk.''

''hard disk  (3F0)''

''F2 system diagnotics''

''for more information,please visit: www.hp.com/go/techcenter/startup

i alrady done those diagnose tests of hdd  all of them and found every thing normal.

and now please help me about this problem i don't want to see that pop i want my leptop like when it was new just shows 

hp logo and start nothing else.

PLEASE HELP ME ABOUT THIS HOW CAN I FIX THIS.BOOT DEVICE NOT FOUND THIS ERROR SHOW WHEN I DISABLE LEGACY OPTION FROM BIOSPRESS THE ESC KEY FOR STARTUP MENU

[Dudefoxlive · Accepted solution]

Sounds like you installed Windows in legect mode so this is normal.  Because you installed in legecy mode you can not change to secure boot mode and still be able to boot.  you would either have to reinstall in secure boot mode or use the built in converter to convert the drive into a UEFI secure boot installation of Windows.

[bhinda007]

I was unable to install windows in secure boot mode so plz tell me how to install windows in secure boot mode.becouse i remember when i tried to install windows last time then there was not any boot option to boot. thats why i install my windows in legacy mode. please tell me that how can i install windows in UEFI mode.when i disable legacy mode then leptop does not detect the boot devices.

and thanks for reply of my last quation now i know why my notebook shows that pop up.

now please help me to install windows in UEFI mode.

[Dudefoxlive]

Sense you have already installed Windows in legecy mode lets just convert it into a secure boot mode wihtout reinstallation of Windows.  Take a look at this video on converting legecy install to UEFI install.