How to boot from usb memory stick

I have got a dell laptop windows 10 but it won't boot from USB Memory stick can you help me out please as its ran into a error code of blue screen death
 
The Dell splash screen as you power up should say somewhere (probably at the bottom) what key to press to enter the BIOS (probably "del")
Once in, go to the boot page and change the priority from HDD first.
Can't tell you exactly (don't have a Dell) as different BIOS edit programs are used by different OEMs, but they're all fairly rudimentary and intuitive.
 
Back
Top