Question Windows 7 Boot Error after changing the hardware setup ?

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circos

Mar 14, 2025
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Hello Forum!

I've not fresh event with Windos 7 Ultimate edition SP1 after changing the hardware setup. Basicly I just drop off the old SSD drive from old computer and insert it into new one.
After booting the system, I've got BSOD with information about:

STOP 0x0000007B (0xFFFFF880009A97E8, 0xFFFFFFFFC0000034, 0x0000000000000000, 0x0000000000000000)

Booting crash over \windows\system32\drivers\c4flash.sys

What I have tried to resolve the problem since:

1. Change the boot from Legacy to UEFI - change the partition map from MBR to GUID. Create the EFI partition with link to bootmgr.efi
2. Try to run all commands (Legacy and UEFI) to fix partition (including disk repair) and recovery the boot configuration.

What I think is important, that SSD is Clone from original (I dont want to mess the original Disk and so far I have right cuz I formted backup disk few times since then).
New laptp is Panasonic Toughbook from series C-31 and there is some kind of Panasonic's version of Disk cnnection as I have see - SATA is adapting to the Panasonic hardware, to have easy hot swap option as I asume.

Could please someone can help me with this case? I try to fight with this issue for a week right now and just stoped in the corner without clue...
 
circos said:
Hello Forum!
I've not fresh event with Windos 7 Ultimate edition SP1 after changing the hardware setup.
Click to expand...
Please list hardware specs of old and new systems.
circos said:
After boot system, I've BSOD error with information about:
STOP 0x0000007B (0xFFFFF880009A97E8, 0xFFFFFFFFC0000034, 0x0000000000000000, 0x0000000000000000)
Click to expand...
0x0000007B error is related to wrong sata controller mode settings.
Possible values - IDE, RAID, AHCI
You have to restore sata controller settings to values on previous system.
BTW - on newer hardware IDE mode most likely will not be available.
circos said:
What I have tried to resolve the problem since:
1. Change the boot from Legacy to UEFI - change the partition map from MBR to GUID. Create the EFI partition with link to bootmgr.efi
2. Try to run all commands (Legacy and UEFI) to fix partition (including disk repair) and recovery the boot configuration.
What I think is important, that SSD is Clone from original
Click to expand...
No, no, no.
You can't do any of that.

Redo cloning.
UEFI/CSM settings on new system have to be the same as on old system.
MBR/GPT partitioning style has to be the same. You can't change that either.

I hope, you're not trying to clone from sata drive to nvme drive.
For that to work, system needs nvme drivers installed and several windows hotfixes (that add support for NVME).
 
Last edited:
So I clone the original disk by Disk Genius and looks like all partitions and format become 1:1.

I read somewhere that might be an problem with missing Boot partition after cloning and so far there was a patch to mess with partitions to EFI boot and so on...

Only tip I have right now is that BSOD over c4flash.sys file...
 
Old Computer:
Intel Merom 1.06 GHz dual-core processor
Windows 7 operating system
2 GB RAM
250 GB hard drive capacity REPLACED to 256GB SSD

New Computer:
Intel-Core i5 @ 2.7GHz
The same Windows 7 OS
12GB RAM
Clone of the same SSD

Possible values - IDE, RAID, AHCI
At BIOS I have only two option to choose: AHCI or Capability

Old Computer has BIOS Legacy with 100mb EFI partition.

How can I restore that settings? I have no option over BIOS to change much, and mostly version of configuration to boot I have checked and or I have boot with error with that .sys file OR I have powned boot screen at Windows Hello image and it is no going...
 
circos said:
Basicly I just drop off the old SSD drive from old computer and insert it into new one.
Click to expand...
circos said:
What I think is important, that SSD is Clone from original (I dont want to mess the original Disk and so far I have right cuz I formted backup disk few times since then).
Click to expand...
Moving an OS, or clone, between systems often fails.
The older the OS (Win 7) the more likely it is to completely fail.

Just do a fresh install in whatever system the drive will live in.
 
Nooooo... that will be such easy 😀
Sirius - I have application here on disk that I cannot download again (because DEV is no longer available on the purchase-arket) and no one know how to configure it again 🙁

That's why I cloned SSD first and playing that configuration over clone (not the source one). Source one still working and that the story and thats the problem I have 🙁
 
I read about:
bcdedit /set { current } safeboot minimal
but more scary after @SkyNetRising mentioned - have been read about war between instaled OS in IDE vs RAID configuration at Bios 🙁 That might be that game over for this mainboard and little bit of chance to run it force as @USAFRet said?
 
circos said:
Nooooo... that will be such easy 😀
Sirius - I have application here on disk that I cannot download again (because DEV is no longer available on the purchase-arket) and no one know how to configure it again 🙁

That's why I cloned SSD first and playing that configuration over clone (not the source one). Source one still working and that the story and thats the problem I have 🙁
Click to expand...
What application, specifically?

Assuming the original system still works and boots up, your only hope is Sysprep.
https://learn.microsoft.com/en-us/w...alize--a-windows-installation?view=windows-11
 
That's a good TIP !
Can I run the \system32\sysprep\sysprep.exe from secure-boot from rescue Windows 7 CD?

Second think - I was searching few days ago an commerce application to resolve or configure the image befor it will be install over the new hardware - AOMEI Partition Assistand - do You know any other appllication similar to those that ight help do automaticly diagnose and repair disk image?
 
circos said:
That's a good TIP !
Can I run the \system32\sysprep\sysprep.exe from secure-boot from rescue Windows 7 CD?

Second think - I was searching few days ago an commerce application to resolve or configure the image befor it will be install over the new hardware - AOMEI Partition Assistand - do You know any other appllication similar to those that ight help do automaticly diagnose and repair disk image?
Click to expand...
Follow whatever instructions Sysprep has.
It still might not work.

For your AOMEI - there is no magical "fix it".
Moving a drive with OS between systems, especially laptops, is prone to fail.
 
@SkyNetRising here are screenshots:

Tree of volumes at Disk SSD:
4TLYPK.png


View of structure:
OIw2Kq.png


Do You need some more information?
 
This is screen from Windows Disk Manager:
Disk 1 is a SOUCE, Disk 2 is a CLONE
64S0Dt.png


This is screen from Disk Genius V5 where Source and Target disk are presented after completed cloning:
IqQ66j.png
 
Please do not crop screenshots.
You have cut out important information about used space in partitions.
Somehow old and new OS partition sizes do not match. At least used space has to match, if clone was done properly.

Try booting from new drive in old system.
Old drive has to be physically removed for this or clone drive gets messed up (this is important, do not skip).

Boot has to be successful.
If it isn't, then you'll have to boot from windows installation media and perform
Automatic startup repair.

After a successful boot you can move cloned drive to new system.
On new system:
Boot mode has to be set to legacy/CSM (it's not even worth trying UEFI. It will not work, because windows was not installed in UEFI mode);​
SATA controller mode - you'll have to experiment with this setting and find appropriate value. Recommended value is AHCI.​
Then try to boot into safe mode. Press F8 repeatedly after pressing power button to access safe mode option.
smm_top.png


After a successful boot in safe mode you can try booting in normal mode.
 
Last edited:
Original disk is 256GB but used is only 1/3 HD Space. Cloned disk have 128GB - thts why you see he diferents in partitions.

I can disable UEFI and choose the AHCI mode. Safe Mode starts and crush over the file:

\windows\system32\drivers\c4flash.sys

What is c4flash.sys?

Right now I can boot Windows 7 only from Live CD installation and access the CMD from Repair Mode. Repair tools cannot help, every time when they diagnose and repair the boot issue,after restarting there is the same issue.

How can I pass the c4flash.sys driver?
 
Did you manage to boot successfully from new SSD on old system?
circos said:
I can disable UEFI and choose the AHCI mode. Safe Mode starts and crush over the file:
\windows\system32\drivers\c4flash.sys
What is c4flash.sys?
Click to expand...
Nobody knows.
Internet provides zero info about such file.
circos said:
How can I pass the c4flash.sys driver?
Click to expand...
Use Device Manager.
Find device associated with this driver.
And disable the device.
 
Ok, as I found on the ORIGINAL disk structure the c4flash.sys is a file related to BIOS:

olFPve.png


Look's like on the OLD COMPUTER there was implementation BIO->OS over the flash BIOS and that why on the NE COMPUTER old disk looking the relations or configuration to this one driver?

Beside that .sys driver, others boot correctly:

J48mcD.jpg


Until this one specyfic. Then computer goes to BSOD:

VEgIW9.jpg


any idea?
 
And how I see into the Panasonic Toughbook fresh Windows 7 installation (over another HD) there is no such a file like a c4flash.sys.

So I assume that somewhere in Windows 7 from old Computer there is assign to c4flash.sys driver - I will try copy the fresh system32\config files and see how it will will works - even if You have any other idea?
 
Ok, so I did a fresh installation Windows 7 and copy hole directory DRIVERS and CONFIG.

On OLD DRIVE with Windows 7 I have delete and upload the CONFIG files. That's doesnt change anything. So I back it again to original backup.

Then I have delete c4flash.sys and booting goes forward to next file Classpnp.sys. Changing the file from fresh Windows 7 installation didn't work so I just delete this file... next was disk.sys (also didn't change the situation after uploading it from fresh installation drive) and I hope those drivers will be installed later after Windows bootup. But that plan crash after fvol.sys where delete or replacement didnt move on.

I have even choose "bcdedit /set { default } safeboot minimal" oprion to low restrict until boot is rolling...

I have no idea how to bit this topic. Right now I run the repair over Live CD Rescue Windows 7 but not charge to any good news 🙁

I try to read something about the "Symptomy" APP and even find that application on Windows 7 disk, but don't know how it is working yet. It's seems like it is only avaliable from windows 7 boot OS (and it is working, its show window with several option to run. From the affected drive when I try run it from CMD from Windows 7 dir location - I have error that assume working only in OS envoirement 🙁 Question: If I connect cloned SSD to windows 10 and see the file structure and tree - can I un this "Symptomy" application and it will be working over that SSD from where it is runed or it will mess the Windows 10 host OS? Cuz I dont understand that...
 
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