If you are wondering what is UEFI, then it expands to Unified Extensible Firmware Interface and is the next generation of the popular BIOS. It’s secure, can hold more data, is much faster than BIOS, and is almost like a tiny operating system that runs on top of the PC’s firmware, and it can do a lot more than a BIOS. The best part, it can be updated by the OEM over Windows Update. It’s because of UEFI, Windows 11/10 offers security features like Secure Boot, Windows Defender Device Guard, Windows Defender Credential Guard, and Windows Defender Exploit Guard. Below is a list of features you get:
Faster boot and resume times.It easily supports large hard drives (more than 2 terabytes) and drives with more than four partitions.Support for multicast deployment, which allows PC manufacturers to broadcast a PC image that can be received by multiple PCs without overwhelming the network or image server.Support for UEFI firmware drivers, applications, and option ROMs.
Disable Secure Boot in Windows 11/10
Just before you jump to disable Secure Boot, because you can, let’s find out if your PC has Secure Boot. Open Windows Defender Security Center, and click on Device Security. In the next screen if you see Secure Boot mentioned, then your PC has it, else it doesn’t. If it’s available, you will know if it actually turned on for your PC. We recommend you turn it on.
If you want to have Secure Boot on your PC, you will need to buy a new PC from the OEM which supports it. Assuming, you have Secure Boot, and it’s turned on, let’s figure out how to disable it. Make sure to read our guide completely, especially this warning message.
Warning if you are disabling Secure Boot
After disabling Secure Boot and installing other software and hardware, it may be difficult to re-activate Secure Boot without restoring your PC to the factory state. Also, be careful when changing BIOS settings. The BIOS menu is designed for advanced users, and it’s possible to change a setting that could prevent your PC from starting correctly. Be sure to follow the manufacturer’s instructions exactly.
Go to Settings > Windows Update, and check if you have anything to download, and install. OEMs send and update the list of trusted hardware, drivers, and operating systems for your PC.Once done, you need to go to the BIOS of your PC.Go to Settings > Update & Security > Recovery > Advanced Startup options.Then you click on Restart Now, it will reboot your PC, and offer you all these advanced options.Select Troubleshoot > Advanced Options.This screen offers further options which include System Restore, Startup repair, Go back to the previous version, Command Prompt, System Image Recovery, and UEFI Firmware Settings.Select UEFI Firmware Settings, and it will take to the BIOS.Every OEM has its own way of implementing the options. Secure Boot is usually available under Security / Boot / Authentication Tab.Set it to Disabled.Save changes and exit. The PC will reboot.
After this, you can change your graphics card or any other hardware which you believe is giving you trouble. Make sure to follow the same steps again, and this time enables the Secure Boot.
Cannot re-enable Secure Boot
As mentioned above, if after disabling Secure Boot and installing other software and hardware, you might not be able to re-enable Secure Boot without restoring your PC to the factory settings. You can however try the above-mentioned method and see if that works for you.
Secure boot is greyed out in BIOS
Set admin passwordDisable Fast BootGo back into BIOS and Load BIOS Factory DefaultsUnder BIOS Security settings, set the security level to default.Update BIOSSee if the Secure Boot is available.
Hope this helps.
