Hi, I have a windows 10 64 bit 120-1123w all-in-one. I have a 4 TB WD external hard drive formatted to GPT. The PC will not boot when the external HD is plugged in. I cannot enter BIOS screen to check boot order. When I unplug external HD and go to BIOS, there's no option to disable USB boot. I'm not sure what else to try. Any ideas? Thanks!
Thanks for reaching out to the HP Forums! I’d like to help!
I understand that you are having issues while connecting the external hard disk to your Desktop PC. Now, you are trying to disable the USB boot. Go to http://hp.care/2pdnasp and follow the steps under “Disabling Secure Boot on a desktop computer".
Once you save the settings, you will get a blue screen with a 4 digit code to enter. There won't be any box or place to enter the code. You simply need to enter the code using the keyboard and press enter for the changes to take effect.
Those steps should do the trick, let me know the outcome!
Good luck 🙂
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DVortex I am not an HP Employee
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