EFI, the Extensible Firmware Interface, is the firmware layer that initializes hardware before Windows loads. It checks CPU, RAM, storage, and peripherals, then hands control to the operating system.
CSM or Compatibility Support Mode is a part of UEFI Firmware and is used to make an operating system and other connected devices compatible with the UEFI. It is only used by devices when the ...
If a Windows upgrade has ever gone sideways on you, you know how vague and unhelpful the error messages can be. Here are my go-to troubleshooting tricks when that happens.
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