Windows fails to boot. Can't even boot to safe mode

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masterton

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Windows fails to boot. Can't even boot to safe mode. Help!

Comodo Internet Security couldn't start properly one day. I uninstalled and restarted. Then reinstalled but failed. It asked me to restart. I was no longer able to boot into Windows after that.

When Windows started, it went directly into Startup Repair. After about 15 minutes, it stated it failed to repair with the following errors:

PROBLEM SIGNATURE
Problem Event Name StartupRepairOffline
Problem Signature 01 6.1.7600.16385
Problem Signature 02 6.1.7600.16385
Problem Signature 03 unknown
Problem Signature 04 292
Problem Signature 05 Autofailover
Problem Signature 06 1
Problem Signature 07 MissingOSLoader
OS Version 6.1.7600.2.0.0.256.1


I tried system restore but failed. The error message was as follows:
(not exact wording since using another language)
System restore failed while logging in to restore from the restore point.
An unspecified error occurred during system restore. (0x80070003)


I tried twice to boot into safe mode but failed.
I tried to press F8 rapidly or held down F8 key once computer started . None worked. They simply went straight to the "Startup Repair" loop.

What's up? How could I fix so it could boot again? Thank you.
 
Joined
Mar 30, 2014
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Boot the computer from a Windows 7 DVD or USB flash drive then jump down to step 9: https://www.sevenforums.com/tutorials/3413-repair-install.html

If you do not have a Windows 7 DVD or USB flash drive, there are instructions on that page above step 9 on how to download Windows 7 from Microsoft and make one.

If you do not have another computer to download Windows 7 and create a DVD or USB flash drive, you'll need to find some local help.

BTW, when you get done repairing Windows, recommend making a backup so you don't have to go through all of this again. https://www.macrium.com/reflectfree
 

masterton

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Boot the computer from a Windows 7 DVD or USB flash drive then jump down to step 9: https://www.sevenforums.com/tutorials/3413-repair-install.html

If you do not have a Windows 7 DVD or USB flash drive, there are instructions on that page above step 9 on how to download Windows 7 from Microsoft and make one.

If you do not have another computer to download Windows 7 and create a DVD or USB flash drive, you'll need to find some local help.

BTW, when you get done repairing Windows, recommend making a backup so you don't have to go through all of this again. https://www.macrium.com/reflectfree
I created a bootable USB drive using Rufus with the following settings:
  • Partition scheme: MBR.
  • Target System type: BIOS or UEFI-CSM.
  • File System: NTFS.
  • Cluster Size: select the 4096 bytes(Default).
I changed the boot sequence and chose USB drive as the first one. Still it won't boot and jumped straight to the startup repair (and failed). What's wrong?

I still want to fix if possible.

If not, what is the best way to backup all program data/settings and files from the laptop in this case? Thank you.
 

masterton

Thread Starter
Joined
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I made a mistake and chose USB FDD, instead of USB HDD. It could boot to the USB drive now.

I ran the startup repair from the USB drive but failed. The error was slightly different.

PROBLEM SIGNATURE
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 -1
Problem Signature 05 ExternalMedia
Problem Signature 06 1
Problem Signature 07 NoOsInstalled

OS Version 6.1.7600.2.0.0.256.1


What else should I do?
Thank you.
 

masterton

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Joined
Jul 4, 2009
Messages
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When I ran the system recovery option from the USB drive, the system did not list any operating system or drive in the list.

This is what is normally shown, but the list is empty in my case.

 
Joined
Mar 30, 2014
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4,165
Well if Windows 7 is gone, it certainly cannot be repaired.

Unless you have a backup, you'll need to do a fresh install.

If there is something on the hard drive you gotta have, https://www.ontrack.com/]Ontrack[/url] can probably help. It can get rather expen$ive though.
 

masterton

Thread Starter
Joined
Jul 4, 2009
Messages
23
Well if Windows 7 is gone, it certainly cannot be repaired.

Unless you have a backup, you'll need to do a fresh install.

If there is something on the hard drive you gotta have, https://www.ontrack.com/]Ontrack[/url] can probably help. It can get rather expen$ive though.
I could browse the folders via command prompt though. The drive does not seem to be corrupt. It appears the boot configuration data is messed up.

I tried to run the following command in the USB drive.

I switched to drive C. Then type:
bootrec /fixmbr

followed by:
bootrec /fixboot

I tried to reboot. The following message showed up this time (instead of going straight to startup repair).

Windows failed to start. A recent hardware or software change might be the cause...
...
File: \Boot\BCD
Status: 0xc000000f
Info: An error occurred while attempting to read the boot configuration data.
 

masterton

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Joined
Jul 4, 2009
Messages
23
C drive is system reserved.
D drive is actually where Windows installed. I'm not sure if it is the reason Windows disk failed to detect a system partition.

I typed the following in the command prompt (in USB drive):
D:
bootrec /rebuildbcd

It complained that it failed to find any Windows installation.
Total identified Windows installations: 0

However when I typed DIR, Windows folder was in the D drive, but somehow the system failed to detect it.
 
Last edited:

masterton

Thread Starter
Joined
Jul 4, 2009
Messages
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The laptop is an old one, about 5-6 years. It should be legacy BIOS to my knowledge. That's why I formatted the USB drive as MBR / BIOS or UEFI-CSM.

The USB mouse does not work. I can only use keyboards to navigate in the installation window in the USB drive.

bcdedit doesn't work. Error:
The boot configuration data store could not be opened.
The system cannot find the file specified.

Switching USB port didn't work. Same issue.

Something is wrong so the Windows can't be recognized.

What is the best way to backup all program data/settings and files from the laptop in this case?
I don't know how to remove the hard disk from the laptop. It would be the best if I can backup without removing the hard disk.
Thank you.
 
Joined
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4,165
In order to do a backup, Windows needs to be up and running so that the backup software can be installed and run.

You could clone the drive to another one but that clone will be exactly the same as what is currently on the old drive.
 
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