BSOD, error 0x00000019 Bad Pool Header on start-up

*Typing from my phone as I cannot use my computer*

It all started yesterday when my laptop was suddenly shut down because the battery ran out.

When I started it back up again I got the Bad Pool Header BSOD. I tried to use the system repair, but it had no effect. I also tried CHKDSK /f :C,which found no errors, and Windows Memory Diagnostics which stated that everything was fine. I also tried to do a system restore to 2 days ago, but it did not help.

I was able to go into Safe Mode with internet which I did. While there I installed CCleaner as I got that recommended to me, and I cleaned files and registry.
This did not help, and suddenly I was no longer able to go into Safe Mode anymore :s The computer stops loading the Safe Mode at the "avgidsha.sys". I also can no longer do system restores as CCleaner seems to have removed the files necessary? >_<

I do not know what to do anymore and I am getting desperate. I have a lot of important files on the harddrive, such as my CV and pictures and movies of my puppy and other things I have photographed. Things that are very dear to me :/

Is there anyone who is able to either help me to fix the BSOD, or at least somehow tell me how/if I can save my files on to an external harddrive.

As I only have access to my phone and BIOS + Advanced Boot Options(including command prompt) I don't think that I can supply any other data than mobile photos of the computer screen? :/

I am incredibly grateful for any help that you can offer!

//Ambrose

Thank you for your quick reply.

I did as the tutorial said and now have a bootable peppermint5 on a USB. However, once I booted it and selected live mode it started to start up, but eventually got stuck at 100% in the Starting up.." window

*Edit*
I restarted it and tried again. My files are currently copying to one of my external drives! Fingers crossed it works!
I need to go afk for a few hours, but I will make a post here once I know that my files are saftly back-uped.

I have now moved all my important files on to external harddrives. Yes.. plural... I made 2 back ups just in case. I never want to feel the horror of loosing all these important memories ever again :P
Thank you so much! You really saved my sanity!

Now on to the matter of fixing my computer. Any ideas for what I could do or what causes the issue? Could it be drivers? I think that there may have been a windows update ready to be installed when the shut down happened...

Is there any additional information that I can provide?

No. Im afraid I dont.

Tried to boot it in safe mode, but it freezes at "avgidsha.sys".

Could I go into peppermint and try to rename all the avg*.sys drivers to avg*.bkp instead?
Or are they not what is causing the issue even if the start up hangs there?