A Lenovo ThinkCentre M90n did not boot to the USB flash drive with ReadSpeed after making the most obvious changes: enabling the USB HDD as the first bootable thing and disabling secure boot. BIOS is from American Megatrends (version 2.20.somethinglong)
The next likely BIOS option to change is CSM - Compatibility Support Module which is Disabled by default. But, it would not let me Enable CSM without first disabling something called the Windows Modern Standby. I am way over my head here. The description of Windows Modern Standby says it is not supported without re-installing Windows. Don't need to risk Windows not booting.
Any suggestions? Thanks in advance.
The next likely BIOS option to change is CSM - Compatibility Support Module which is Disabled by default. But, it would not let me Enable CSM without first disabling something called the Windows Modern Standby. I am way over my head here. The description of Windows Modern Standby says it is not supported without re-installing Windows. Don't need to risk Windows not booting.
Any suggestions? Thanks in advance.