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Posts Tagged ‘Corruption’

HowTo: Use DISM and SFC tools to check+fix your Windows installation

If you’re having issues with your Windows 7 or newer, you should consider whether its installation has become corrupted (due to malicious software or hard drive errors).

After doing a disk check (say by right clicking the appropriate drive under my computer and selecting Properties, then Tools tab and Error checking) and a complete virus scan (on Win10 you can click the shield icon of Windows defender in the taskbar tray and at scanning options choose to do a full scan – or if you have installed some third-party antivirus double-click its icon in the taskbar tray and when its GUI opens up opt to do a full scan), then try the following steps to repair your Windows installation:

1. Press WIN+R to open Run dialog

2. Type in:

CMD

Hold down CTRL+SHIFT keys and click OK to open the command line window in Administrator mode (do press Yes at the User Account Control prompt)

A (usually) black text-based console window will open up and you’ll be greated with something like:

Microsoft Windows [Version 10.0.18363.720]
(c) 2019 Microsoft Corporation. All rights reserved.

and then a prompt like:

C:\Windows\system32>

3. Type in the following and press the ENTER key:

DISM.exe /Online /Cleanup-image /Scanhealth

and press ENTER to execute the DISM tool with the option to check the windows image health and wait patiently for it to complete

Deployment Image Servicing and Management tool
Version: 10.0.18362.1

Image Version: 10.0.18363.720

[==========================100.0%==========================] The component store is repairable.
The operation completed successfully.

4. In case you see a message that the component store is repairable, then when greeted with the C:\Windows\system32> prompt again, type in the following and press ENTER:

DISM.exe /Online /Cleanup-image /RestoreHealth

to repair the Windows image:

Deployment Image Servicing and Management tool
Version: 10.0.18362.1

Image Version: 10.0.18363.720

[==========================100.0%==========================] The restore operation completed successfully.
The operation completed successfully.

If RestoreHealth fails and you’re on Windows 10, then you should checkout this article:

https://www.tenforums.com/tutorials/16397-repair-install-windows-10-place-upgrade.html

on how to do an in place upgrade of Windows 10, opting to keep your settings and apps

5. If all goes well you’ll see that the restore operation completed successfully and you’ll be taken again to the command-line prompt C:\Windows\system32>

Now that the windows image is checked and fine, you should check your Windows installation against that image, giving the following command and pressing ENTER:

sfc /scannow

Beginning system scan.  This process will take some time.

Beginning verification phase of system scan.
Verification 100% complete.

Windows Resource Protection found corrupt files and successfully repaired them.
For online repairs, details are included in the CBS log file located at
windir\Logs\CBS\CBS.log. For example C:\Windows\Logs\CBS\CBS.log. For offline
repairs, details are included in the log file provided by the /OFFLOGFILE flag.

After any automatic repairs you should see the prompt C:\Windows\system32> again. Now repeat the same step till you see no more errors found and repaired.

sfc /scannow

Beginning system scan.  This process will take some time.

Beginning verification phase of system scan.
Verification 100% complete.

Windows Resource Protection did not find any integrity violations.

When back at the C:\Windows\system32> prompt with no errors found and repaired, just close the console window or type in the following and press ENTER:

exit

Fix: Acer Aspire One (AS1) ZG5 blank screen at startup

Seems Acer Aspire One (AS1) ZG5 can have a recurring problem, esp. if its battery is near its end of life. If it shuts down abruptly its BIOS settings seem to get corrupted and its BIOS instead of discarding them seems to freeze.

Luckily they have a way to update the BIOS via USB key at machine power up. Flashing the BIOS (even to the same version) will fix the issue. Probably resetting the BIOS NVRAM data would do the same, but since you can’t boot this is the way to do it (without fiddling with the hardware directly that is).

The process suggested by ACER in case you come across this issue is the following:

Create a recovery USB drive to update the Bios on the unit.

The specific steps to perform this recovery with the USB drive are:

1. Download & Extract BIOS_Acer_3310_A_AOA110 & AOA150 (found in  https://www.acer.com/ac/en/US/content/support-product/60?b=1)

2. Rename the Bios name from 3310.fd to zg5ia32.fd

3. Copy zg5ia32.fd and Flashit.exe to USB flash drive.

4. Start the restoration process:

  1. Plug the AC Adapter into the unit.
  2. Insert the USB flash drive into a USB port.
  3. Press and Hold down the Fn and the Esc keys together.
  4. Keep these keys held down and press power.
  5. When the unit’s power light comes on release the Fn and Esc keys.
  6. After the keys have been released the power light will start to blink.
  7. Let the unit run and after approximately 1 to 7 minutes, the unit should reboot.
  8. Video should now be restored.

Can also see the process in this video:

https://www.youtube.com/watch?v=iHkGkw9EE8c&feature=emb_logo

See my comment there with the newer links I have above, have fixed the links they had (since they had old broken ACER links they eventually provided the file themselves) so that you download the BIOS from ACER directly, to be safer and to be sure you always get the latest BIOS (aka 3310 at the time of writing).

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Fix: Windows Update 0x8e5e03fa, 0x800703fa errors

Sometime ago, I was receiving errors 0x8e5e03fa and 0x800703fa on several pending updates at Windows 10’s Update pane (found at Settings / Updates & Security / Windows Update from the Start menu).

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The updates history wasn’t showing many more details, but could see Knowldege Base article numbers (KBxx) for some pending cummulative updates.

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Trying to update some graphics drivers from the Device Manager (can access that by right clicking the Start menu button and selecting “Device Manager” from the popup menu shown on Windows 10), by right-clicking respective devices and selecting to update their drivers, was also failing.

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So it did look like a systematic issue, not some issue with some specific update item.

Looked up the error code 0x8e5e03fa via Google and found this article mentioning a JET (database engine) error. That’s the same engine used in Access if I remember well, interesting that it’s getting used by Windows Update too (probably to maintain some private database).

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The suggested fix didn’t work since the file mentioned in that article was not existing, but at that folder (%windir%\system32\catroot2) I found a dberr.txt file that obviously was holding some error log.

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Printing out that file (can use TYPE dberr.txt | more to wait after each “page”), I couldn’t help but notice that it was writing JET error all over it.

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I renamed that file (think it was then recreated again automatically) and also renamed the two folders there (using the move command – e.g. can type move, press TAB till the name of the folder appears and then add a minus sign and press TAB again till the same folder name appears and press ENTER). Did that while having the cryptsvc service stopped (using net stop cryptsvc command) as that article suggested. Then started the service again (using net start cryptsvc). 

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After doing this, all failing updates (some extra driver updates had been found using DriverBooster, but were also failing to install) eventually installed fine and Windows 10 started bringing more updates:

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