Win 10 Won't Boot After Avast Uninstall

Hello,

This is a new thread. Attention, MaxTurner and _nullptr if you're listening!

You helped me resolve my issue with Win 10 problems and Avast. A friend of mine heard of my ordeal and took it upon themselves to unistall Avast on their own (I assume using windows installer).

After doing so, they are no longer able to boot. The receive the blue screen Automatic Repair and nothing appears to fix the problem. Is there a way to run an 'avast clear' type application at boot up?

Any suggestions would be appreciated. (BTW, the other system is running great!)

 

If they can get into Safe Mode with Command Prompt they should be able to run avast clear if it is ether on their system or on a USB pen drive. However, as it is their system it is difficult to know what steps they took when uninstalling Avast or what the general state of that system was.
If they are comfortable explaining things here and answering questions, it might be good for them to register here and seek help in this software forum.

 

Thanks. I'll let them know and see if they can register. I'm not sure, seeing that they currently have no system.

 

The laptop cannot boot. It's in an automatic repair loop. Any attempt to restart, reboot into safe mode of any type, or normal mode causes automatic repair. Automatic repair reports that automatic repair couldn't repair the pc.

 

OK so they either register here on another device and seek help, or they can trust their luck to a PC Repair shop.
Or they could also seek the assistance of a friend with a working system to hook into the hard drive of that system and save any important data, then do a full reinstall of the OS.

 

MT's advice is best.
My question would be; If you press F8 at the moment of booting up your machine. Do you get the opportunity of opening in safe mode and bypassing the usual Windows start up?
Good luck,
s.

 

I was able to get the computer over the weekend. Can I work on this laptop with you?

F8 doesn't work at boot time. No effect. Goes into automatic repair.

 

The process of starting in Safe mode could be the start of sorting the problem. I found
4 Ways to boot into Safe Mode in Windows 10
Making a recovery drive and following the instructions given in the above link should work.
Then you should be able to follow the advice given by MaxTurner in #2

Good luck with it.
s.

 

Maybe I wasn't clear before. This PC can't get into safe mode. There appears no way to get there. Advanced settings->troubleshoot->restart->safe mode takes you into the Automatic repair. Automatic repair cannot repair the PC. Pressing F8, like the old days, doesn't work. This is Windows 10 home. Thanks. I was able to get to command prompt, but unable to find any useful files.

If I could get to safe mode, I'd be happy. If I could get avast clear from command prompt or access a flash drive from the command prompt, I'd also feel that maybe there would be some hope.

Thanks. I hope that there is something that you can suggest.

 

Creating a Windows 10 recovery drive onto a USB stick is the process I was pushing you towards in my previous post. I have not followed the procedure but in booting from it troubleshoot/Advanced options/Startup settings/Restart should give the opportunity to start in Safe mode with or without Networking.
It is a complicated process if you don't have a Windows 10 home recovery drive but it should work.
Of course you might have to change the Bios to boot up from the USB drive.
Best wishes,
s.

 

Yes, the options are there to boot into all of the safe mode options. But selecting any of them restarts and immediately goes into automatic recovery, not safe mode. That is the problem.

 

Hello again,
Apologies for messing you around. The automatic recovery restart is a problem to get away from. A friend had his Windows 8.1 laptop stuck with this difficulty. I upgraded his machine to Windows 10.

Have you used the recovery drive method?

I am not saying that it will certainly work from the recovery drive. It might well be a waste of time and keep on returning to automatic recovery.
Apologies for repeating myself and good luck,
s.

 

I found https://www.lifewire.com/how-to-force-windows-to-restart-in-safe-mode-2625163

Which might be worth looking at...
s.

 

OK. Hello again.

I was able to disable automatic repair, and when windows 10 attempts to boot the following error appears:

The operating system could not be loaded because the following file is missing or contains errors:
file: werkernel.sys
error: 0xc000000f

I ran chkdsk /r from the command line and sfc /scannow and nothing the same occurs. I ran the suggestions in Stephen_c16 post fix the mbr and no difference. Is there a way besides a re-install to fix or are we at the end of the line?

Thank you in advance for your suggestions.

 

You'll just have to see how others have fixed this issue:
https://appuals.com/how-to-fix-boot-error-0xc000000f/

 

I found another interesting Youtube tutorial.
How to Fix Error Code 0xc00000f in Windows 10

You might have to pause the video to note down the commands.
Hope you get there soon.
s.

 

hello again. I followed the instructions in the link and after the rebuildbcd command, it found no windows installations. I looked at the directory structure, and it appears that the windows installation is on the e: drive not c:.

would that have anything to do with not finding the windows installation if the export and attrib commands pointed to the c: drive?

If so, would I be OK running those commands pointing to e:?