UEFI Boot Issues

LockDown32
LockDown32 used Ask the Experts™
on
I have not gone real deep in to UEFI. I have a Dell Optiplex 3010 that booted to the "You need to repair Windows" screen. The only CDs that would boot are ones that have a UEFI option. I went in to the BIOS on this computer and UEFI is turned off yet it would not boot a standard Windows 32-bit CD. I double checked every UEFI option in the BIOS and it is turned off. Any ideas?
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Most Valuable Expert 2015
Commented:
Disable SecureBoot.
LockDown32Owner
Top Expert 2016

Author

Commented:
That was one of my thoughts too but since UEFI was not enabled Secure Boot was not and option.
Most Valuable Expert 2015

Commented:
Why do you need to boot without UEFI at all? The Windows Installation DVD's used for repairs should boot into UEFI mode.
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LockDown32Owner
Top Expert 2016

Author

Commented:
Not the Dell Windows 7 Professional. Hence the problem. I am still trying to figure out, with UEFI disabled, why UEFI comes in to play at all.
Did you turn on legacy boot in the BIOS?
Top Expert 2015
Commented:
UEFI and BIOS boot chains are different. You cannot change that option on installed windows (or Linux or whatever)
LockDown32Owner
Top Expert 2016

Author

Commented:
If you mean you cannot switch between UEFI and Legacy on a system currently running Windows you are correct. Like switching between SATA and AHCI on the fly. Not good.
Yes; but, most CD's are legacy boot and that is what we are trying to accomplish
LockDown32Owner
Top Expert 2016

Author

Commented:
Yes. My comment was mean't to acknowledge and support your comment about changing the option on installed Windows. It was not intended to be the answer to this question.
When you hit F12 for the not options, is the CD/DVD listed as a choice?
If it isn't, read this: http://www.dell.com/support/article/ag/en/agdhs1/SLN142679/en
Top Expert 2015

Commented:
While in theory UEFI CD can make partition table and vice versa - no system installer in the world does that.
LockDown32Owner
Top Expert 2016

Author

Commented:
According to Dell it was a problem with the motherboard

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