How can I get my laptop back into windows?

April 24, 2018 at 12:10:05
Specs: Windows 10
Error message: the header checksum for this file doesn't match the computed checksum. \WINDOWS\system32\winload.efi
error code: 0xc0000221
What can I do?

See More: How can I get my laptop back into windows?

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#1
April 24, 2018 at 14:17:02

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#2
April 24, 2018 at 16:45:05
Best to use the Microsoft guide, don't download anything from the Wiki.

Bug Check 0xC0000221: STATUS_IMAGE_CHECKSUM_MISMATCH
https://docs.microsoft.com/en-us/wi...


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#3
April 24, 2018 at 18:01:17
Yep, avoid that Wiki stuff it's snake oil. Nothing whatever to do with Wikipedia by the way.

Always pop back and let us know the outcome - thanks


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Related Solutions

#4
April 24, 2018 at 19:36:37
There was nothing to download, it just described how to do a system restore.

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#5
April 24, 2018 at 20:53:46

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#6
April 24, 2018 at 20:55:51
If you scroll down, it shows you what you need to do without downloading anything.

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#7
April 24, 2018 at 20:58:37
"If you scroll down, it shows you what you need to do without downloading anything"
I realize that, I was warning the OP just in case.

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#8
April 24, 2018 at 21:54:19
Gotcha, thanks Johnw.






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#9
April 25, 2018 at 05:25:39
THX 1138
Hope you didn't think I was treading on your toes. It's just that I have an immediate distrust of outfits that use someone else's style to push their goodies. This mob clearly mimic Wikipedia's style.

Agreed though, the "verbiage" could be useful.

Always pop back and let us know the outcome - thanks


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#10
April 25, 2018 at 10:31:24
Hi Johnw, no not at all, I agree with the shadyness of wiki site, I didn't think about it until you mentioned it.

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#11
April 26, 2018 at 07:40:39
Thanks for the replies. I can't get into windows at all. I have a blue screen with options. From there I can't reset my PC because it starts and won't finish. System restore won't work, image recovery won't work, startup repair won't work. I have a recovery USB flash drive, but it doesn't work. I can get into the Command Prompt but I don't know what to do there. The Docs.microsoft webpage says to use the ERD. Where do I find that?

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#12
April 26, 2018 at 08:17:56
Not an issue I've personal experience with but see the first answer here:
https://answers.microsoft.com/en-us...

EDIT:
You will have to create the ISO from the file on another computer then put it on a CD or Flash Drive and boot from it on the one with the problem. To do this you insert the flash drive or CD then turn off and restart the computer. You might have to go into BIOS to set the flash drive or CD ahead of the hard drive so that it's seen first. Same applies if you use your recovery flash drive (set to first drive in BIOS and boot up with it inserted).

Always pop back and let us know the outcome - thanks

message edited by Derek


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#13
April 26, 2018 at 16:21:39
Another tool to try.

How to use a Lazesoft Windows Recovery CD or USB device to fix the boot problems if your Windows operating system does not start correctly.
"It is very common for PC users to be faced with a Windows crash. When this happens, the dreaded 'Blue Screen of Death' pops up, or your PC has a black screen and can not boot or start up"

Lazesoft Recovery Suite Home Edition
http://www.softpedia.com/get/System...
http://www.lazesoft.com/lazesoft-re...
Screenshot ( SS )
http://i.imgur.com/c9viJO4.gif
http://fs5.directupload.net/images/...
Lazesoft Recovery Suite Home Edition video tutorial
https://vimeo.com/106789683
Tutorials
http://www.lazesoft.com/guide.html
How to Boot a Computer from a Lazesoft Recovery USB Device
http://www.lazesoft.com/create-a-bo...
How to Burn a Lazesoft Recovery CD
http://www.lazesoft.com/burn-a-boot...


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#14
April 28, 2018 at 10:38:42
In response to #12, I tried to boot with an ISO on a flash drive. After accepting the license I get a choice of "Upgrade: Install Windows and keep files, etc..." or "Custon: Install Windows only (advanced)". If I choose the first choice, I don't get anywhere because it asks me to remove the flash drive and start Windows normally which I can't do. If I choose the second choice, I get a list of partitions (Drive 0 Partition 1,2,3, or 4) and each one says that Windows cannot be installed here. That leaves me with no choices. Is there a way to determine for sure whether the hard drive is complete shot?

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#15
April 28, 2018 at 13:37:43
"Is there a way to determine for sure whether the hard drive is complete shot?"
If the Lazesoft method in post #13 doesn't work, use Lazesoft's Command Prompt to run chkdsk.

Screenshot ( SS )
http://i.imgur.com/c9viJO4.gif
http://fs5.directupload.net/images/...

Once you have a command prompt, Copy & Paste > chkdsk c: /f /r and then press <Enter>

message edited by Johnw


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#16
April 29, 2018 at 13:23:32
I tried to use Lazesoft and was able to create a flash drive and use it, but when it boots with the flash drive, I only get a black screen with a blinking dash in the upper left corner. I had run the chkdsk a few days ago and no problems were reported at that time. I no longer see the error message I reported at first. Now I just get the black screen when booting from the flash or a black screen saying "Media test failure, check cable" followed by "No bootable device -- insert boot disk and press any key" when booting from the hard drive.

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#17
April 29, 2018 at 13:37:15
Saw a report from someone with the same problem and error message. Theirs turned out to be faulty RAM. If you are happy inside the laptop you could try cleaning the RAM edge connectors then pop it in and out a few times to ensure the sockets are clear of oxide. If there is more than one stick try one at a time in first position.

EDIT:
Bit late to ask but what is the background to this? Did this error message just suddenly come up out of the blue or was it after you did something?

Always pop back and let us know the outcome - thanks

message edited by Derek


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#18
April 29, 2018 at 15:37:54
Did you go through all the fixes in my post 2?
https://docs.microsoft.com/en-us/wi...

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#19
April 29, 2018 at 17:19:06
Using the flash drive I created following the steps in post 12, I was able to get into the command prompt again today and run the chkdsk again. It ran for a couple hours and reported the number of kb in numerous areas and didn't report any bad sectors. The only failure that was reported was "failed to transfer logged message to the event log with status 50."

I didn't do everything from post 2 because I couldn't understand a lot of it. My recovery disk didn't work and I was unable to reinstall windows over the existing windows and I couldn't get into safe mode so I didn't know where to go from there.

In reply to Post 17, the error message came up after a restart. No new hardware or software was installed just prior to that.

I am not concerned about recovering lost files because I have copies of all important files. I am just trying to put this laptop back in working order if it is at all possible or else just buy a new one or a new hard drive.

message edited by bunnyrabbitt


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#20
April 29, 2018 at 17:25:09
Start your PC in safe mode in Windows 10
http://windows.microsoft.com/en-au/...
http://www.tomshardware.co.uk/faq/i...
7 ways to boot into Safe Mode in Windows 10
http://www.digitalcitizen.life/4-wa...
How to Fix a Computer That Won't Start in Safe Mode
https://www.lifewire.com/fix-a-comp...

"because I couldn't understand a lot of it"
Try again & list them please.


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#21
April 29, 2018 at 17:32:20
At some stage I think you should check the RAM as per #17.

Always pop back and let us know the outcome - thanks


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