Link to home
Start Free TrialLog in
Avatar of sorushnazari
sorushnazari

asked on

Down grade from Windows 8.1 to 7 NTLDR missing

HI,

I have a problem. I downgraded from windows 8.1 to windows 7 with genuine key etc. However as I don't know much about secure boot and new uefi I just probably messed up the bios config. Now I'm getting NTLDR Missing. Could someone help please. Thanks
Avatar of adamdalg
adamdalg

try resetting the bios boot order.
If it is not a boot order issue, you can try holding down F8 at startup.  Go to the "advanced boot options" and then select "repair your computer".
Avatar of David Johnson, CD
ntldr missing means that you are trying to boot a drive that has a windows xp boot sector on it.  More precisely a windows 5.2 boot sector.

what steps did you use to downgraded from windows 8.1 to windows 7 with genuine key.
Did you roll back to a previous build of windows? from the advanced recovery menu?

If you have more than 1 hard drive you probably have set the wrong hard drive in your boot order. Rolling back from a Windows 7 upgrade to windows 10 does not entail entering the bios.
ASKER CERTIFIED SOLUTION
Avatar of nobus
nobus
Flag of Belgium image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
@nobus: windows 7 does not use ntldr it uses bootmgr.exe instead.

bootsect /nt60 c: /force /mbr   <<this will change it to a bootmgr.exe boot >>
bootsect /nt52 c: /force /mbr   << changes it to a ntldr boot>>
@ david : i know that - but since he got the NTLDR message, and no person gives all the info, he may even have upgraded first from XP....for all i know
Avatar of sorushnazari

ASKER

Thank you for all your help. I tried all the suggestions, and apologies about the delay in reply. But I decided to just format the entire disk and install windows 7 from scratch. The problem seemed to be that there were more than 4 primary partitions and I couldn't install it on the one that was already empty.
This might work for some cases but in my case I had a situation where it wasn't possible to install the OS 7 on the partition in question as there were too many active partitions and primary partitions.