PC wont start windows 7

[romerrr]

My Brother didnt want windows 10 on his pc and the warranty just ended so he asked me to change to windows 10 so did from a pen first it wouldnt go pass the tarting windows part of the boot when after the loading files loading screen it wouldnt move from there so i changed his hdd from his pc to mine and installed windows there and work perfectly im currently typing this from such instalation but when i put the hdd on his pc it recognizes the hdd as it apears in the BIOS but says no recognizable bootable device is found

 

[popatim]

Welcome to UEFI, its much more secure then BIOS was. Try disabling secure boot in the bios.

 

[romerrr]

Welcome to UEFI, its much more secure then BIOS was. Try disabling secure boot in the bios.

i did but it was no good the solution was really only instal windows 10 again much for me and brothers discontent as we both hate the OS

 

[tekno2go]

For windows 7 your uefi bios needs to set boot to legacy or csm enabled. Secure boot also needs to be disabled.
CSM is a compatible system module that makes your uefi bios act like the legacy or older bios.

That is why a windows 7 install disc will stop at starting windows after loading files. Your csm option may not show as being allowed to change it to enabled, if so run the install disc so it loads the drivers then restart and boot into your bios. The csm function should be operable then.