I'm really at my wits' end here. After a recent update, my Windows installation won't boot, and I've tried everything I can think of to fix it. I asked for help, but the responses kept looping around topics like bootmgr and EFI, and now I'm stuck since DISM isn't working either. I even tried rewriting the EFI partition, but that didn't solve the problem.
When I run DISM, I get an error saying "Error: 0x800f0915 - The repair content could not be found anywhere." I've made a new ISO with install.wim, but it still fails. I really don't want to reinstall Windows and have to redo all my apps.
I've tried booting from a USB and using the recovery environment to repair, but it tells me I need to boot into the system to do that—if only I could! I have a second HDD that boots fine, so I attempted to add the first HDD to this drive's EFI, but I'm still getting a boot inaccessible error.
I thought if I could just get DISM to work, everything would be fine. I've read that the ISO needs to be the same or newer than my installation, but wouldn't a newer version be fine? My original version was 26100.1 with a 24H2 update, and my current ISO is 10.0.22621.1. Any suggestions?
5 Answers
Could be a good idea to check Microsoft's guidelines for repairing corrupt system files. They recommend using installation media if DISM can't find the necessary files. Avoid copying the SxS folder; that won't resolve your issue. Stick with the install media for the best chance of a fix.
Have you checked if your system is under warranty or if your manufacturer has recovery tools? Many have built-in recovery options that can restore your OS while keeping your data. For example, Dell has one that allows you to select which folders to keep. Just a thought!
It sounds like you're in a tough spot! If you're not getting any love from DISM, one option might be to consider a reinstall, especially if the drive isn't encrypted. You could back up your important data using another computer to avoid losing anything. It might save you a lot of time in the long run instead of chasing after fixes that may not work.
For DISM to work, you absolutely need a source file that matches your exact Windows edition and version. If you're running Windows 11 Pro 24H2, make sure to use a matching Wim/Esd file. Also, detail what happens when you attempt to boot; it could help diagnose the issue more specifically. If you can't fix it, an in-place upgrade could preserve most of your settings while allowing you to fix the corrupt files.
If System Restore isn't an option, you can try using DISM to revert any recent updates - it might help! From the command prompt in the recovery environment, you can list installed packages using `dism /image:c: /get-packages` and then remove a recent problematic update. It might be worth a shot, and if it boots up again, you can then do a proper repair.
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