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Windows 7: BSOD boot loop after downgrading from Windows 10 to Windows 7

08 Aug 2015   #11
pauliux963

Windows 7 Ultimate 64bit
 
 

Quote   Quote: Originally Posted by Laith View Post
Hmm, this is probably because it dosen't have the right drivers. You need to find the right drivers for your mouse and keyboard.
I reconnected my mouse to the USB port, the drivers installed but it still doesnt work


My System SpecsSystem Spec
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08 Aug 2015   #12
Laith

Windows 10 Professional x64
 
 

Hmm, restart the computer?
My System SpecsSystem Spec
08 Aug 2015   #13
pauliux963

Windows 7 Ultimate 64bit
 
 

Same :/
My System SpecsSystem Spec
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08 Aug 2015   #14
Laith

Windows 10 Professional x64
 
 

I think you'll have to re-install. That's your last resort.
My System SpecsSystem Spec
08 Aug 2015   #15
pauliux963

Windows 7 Ultimate 64bit
 
 

Quote   Quote: Originally Posted by Laith View Post
I think you'll have to re-install. That's your last resort.
Yeah, thats for the best. The downgrade probably messed up my registry.

Thank you!
My System SpecsSystem Spec
08 Aug 2015   #16
Laith

Windows 10 Professional x64
 
 

Yup it did mess up the registry really bad i think.
No problem! It's my duty to help!
My System SpecsSystem Spec
08 Aug 2015   #17
skidkid

Windows 7 Ultimate x64 SP1
 
 
I got the same issue

I have the same issue

onlye I had to bend over backwards to create a bootable windows USB drive with the installation to be able to get in and run command line steps to restore the keyboard and mouse activity from the registry

still working on isolating the 'driver' or whatever the cause is

I was able to regain mouse and keyboard control again after doing the following:

- create a USB bootable windows installer flash drive
- run recovery options
- go to run command line
- run regedit.exe
- click on any of the HKEY options
- select file -> load hive
- load the both the software and system hives, (name it to windowssoftware and windowssystem)

look for the following:

ControlSet001\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}
AND
ControlSet002\Control\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}

- Look for a REG_MULTI_SZ value titled UpperFilters. If it doesn't exist, create it.

- Edit the value UpperFilters to read kbdclass. If there are any other line items in UpperFilters, delete them. (note that sometimes the upperfilter will be there, but the kbdclass description won't be. This will cause a failure to load.)

- Navigate down a bit to ControlSet001\Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}
AND
ControlSet002\Control\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}

-Look for a REG_MULTI_SZ value titled UpperFilters. If it doesn't exist, create it.

= Edit the value UpperFilters to read mouclass. If there are any other line items in UpperFilters, delete them. (as with the keyboard, if the class isn't there it won't work)


I still need to work out the issue with the 0x7e error though, still can't get normally into windows, only safe mode, and only regained access to mouse and keyboard using that method, if you guys got a way to work around it please do so...

I'm getting this from the windows system event logs:

The Computer has rebooted from a bugcheck. The bugcheck was: 0x0000007e
(0xffffffff80000003, 0xfffff8800570b0f5, 0xfffff880009a9328, 0xfffff880009a8b80) A dump was
saved in: C:\Windows\MEMORY.DMP.ReportId: 080815-7425-01

let me know if there is something I can grab for you to help out
My System SpecsSystem Spec
08 Aug 2015   #18
pauliux963

Windows 7 Ultimate 64bit
 
 

I checked and every value is already set corretly as you mentioned above. Thats not the case probably. Anyway, I installed new installation of WIndows 7 on another partition and everything seems normal. I will be doing full-wipe reinstall tomorrow, got Windows 8 so I'll try that.
My System SpecsSystem Spec
09 Aug 2015   #19
Laith

Windows 10 Professional x64
 
 

That's good to hear.
My System SpecsSystem Spec
09 Sep 2015   #20
MetaForr

Windows 7 Pro 64 bit
 
 

Many thanks to Skidkid! Your Keyboard and Mouse registry settings helped tremendously. I was receiving the 0x7e error also, after downgrading the desktop from Windows 10. I was able to replace the registry files in the c:\windows\system32\config folder with the backups in the c:\windows\system32\config\regback folder to get the computer to boot in to normal windows.

I hope that works for you as well.

Thanks,
Tim.
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 BSOD boot loop after downgrading from Windows 10 to Windows 7




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