greetings

 

i wanted to install a new windows 10 .

 

i downloaded windows 10 iso from Microsoft and burned it on usb flash drive using rufus app 

 

i restarted laptop , went to boot option and choosed usb flash drive

 

the laptop load for a few seconds then auto restart and boot to the old windows again

 

i tried disabling secure boot and enabling legacy options roms , tinkering between uefi and bios options , tried both GPT and MBR  but all in vain

 

every time i try to boot from flash drive the laptop load for a few seconds then restart to the already installed old windows 

 

somehow something is preventing the lap from reading my flash drive

 

my lap top is dell Inspiron 15 3565

 

any help is appreciated