Windows 10 downgrade to Windows 7 went wrong

So I was downgrading from Windows 10 to Windows 7 the other night, and my laptop started the process. I have a Satellite C55 Series with windows 7 pre-installed on it. I started watching TV and sometime later I saw my computer was off. It was still plugged in and everything, so I assumed it was done downgrading. I went to turn it back on and I got a quick blue screen of death and it dumped the data and when straight to a black screen which gave me two options, use startup repair or start windows normally. I tried startup repair and it gave me this:

Problem Event Name: StartupRepairOffline

Problem Signature 01: 6.1.7600.16385

Problem Signature 02: 6.1.7600.16385

Problem Signature 03: unknown

Problem Signature 04: 21199403

Problem Signature 05: AutoFailover

Problem Signature 06: 2

Problem Signature 07: 0x7e

OS Version: 6.1.7601.2.1.0.256.1

I can access safe mode fine so is there anyway I can fix this without having to copy all my files over to an external drive and wiping my laptop?

 

Question Info


Last updated June 19, 2019 Views 317 Applies to:

Hello,



Thank you for visiting Microsoft Community.

 

As per the description, I understand that after downgrading your Windows from 10 to Windows 7, you’re unable to start your PC in normal mode. I will certainly help you with the issue.

 

I would suggest you to follow the steps mentioned below;

 

Method 1:

Perform Clean Boot in Safe Mode and check if that helps.

 

Please refer to the link mentioned below to know how to perform Clean Boot:

https://support.microsoft.com/en-us/kb/929135

 

Important Note: After you have finished troubleshooting, follow these steps from section “How to reset the computer to start as usual after clean boot troubleshooting” to reset the computer to start as usual in the link provided to return your computer to Normal startup mode.

 

Method 2:

Try to rebuild BCD using the Bootrec.exe tool.

To run the Bootrec.exe tool, you must start Windows RE. To do this, follow these steps: 

1.     Put the Windows 7 installation disc in the disc drive, and then start the computer.

2.     Press a key when you are prompted. Select a language, a time, a currency, a keyboard or an input method, and then click next.

3.     Click Repair your computer.

4.     Click the operating system that you want to repair, and then click next.

5.     In the System Recovery Options dialog box, click Command Prompt.

6.     Type Bootrec.exe, and then press ENTER.

 

Refer to the following link for more information:

How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows

http://support.microsoft.com/kb/927392

 

The link provided below might help you to download and create installation media.

 

Download Windows 7 Disc Images (ISO Files)

 

Hope this information helps.

 

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I would retrieve all of your personal files and transfer them to a removable device first

Right about now a system image would come in handy to undo all of what the upgrade did :/

http://www.macrium.com/reflectfree.aspx

https://www.youtube.com/watch?v=KQA7NlLvxg8

If you end up reinstalling after retrieving your personal files follow this process

http://answers.microsoft.com/en-us/windows/forum/windows_7-update/windows-update-remains-at-checking-for-updates/ff3c442e-79a6-40d3-ac35-29e130cebef1

Make sure you skip all of the win-10 updates

http://www.ghacks.net/2015/04/17/how-to-remove-windows-10-upgrade-updates-in-windows-7-and-8/

KB2952664
KB2999226
KB3035583
KB3075249
KB3013531
KB3021917
KB3068708
KB3080149
KB3123862

If you need reinstall media use Chrome and this process to get it

http://www.ghacks.net/2016/02/17/download-windows-7-and-8-1-iso-images-from-microsoft/
Mcafee/Norton/IOBit security should not be Installed on a functioning computer=FreeAdvice

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Re-install Windows 7

If you are going to do a re-install, you may be able to take your data off first.  Remove the hard drive and put it into a USB external drive housing.  Connect to a working PC, copy the data off.

Always check to ensure the hard drive you are about to rebuild is actually sound from a hardware perspective.  Download and run your hard drive manufacturer’s drive testing software.

If you had or have Windows 10 installed. Read Woody Leonhard’s advice first. http://www.infoworld.com/article/3033806/microsoft-windows/how-to-roll-back-your-windows-10-upgrade.html

However, if you are unable to make the reversion back to Windows 7.  You should do a complete re-install.  

Full Clean install.  The only absolutely sure way to have a perfectly clean system.  If you are not using a brand new disk, when it shows the screen to select where you want to put Windows, click on the Advanced link and delete all partitions.  Do not install any software until after ALL Windows Updates are installed and Device Manager shows all devices installed.

You will need a Win7 install disk.  You will need a legal product code and the win7 disk must match the edition of the code and its bitness (32 or 64).  If you do not have the original Windows 7 install disk, borrow one from a friend.

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