Any solution appeared to fix win 8.1 drivers disaster? (keyboard stopped to work)

Win 8.1 never stops to impress me. This is already third time such disaster happened to me.
Before that I was using system refresh to "reinstall" windows, but I tired :/

Ok, the problem... my ps/2 keyboard stopped to work again, but this time with audio device.
In previous time it was keyboard only and mouse and keyboard.

In device manager those devices marked with yellow mark.

If I open device properties I see this:

(looks like windows programmers forgor to add variables in printf functions, so only type specifiers is shown.)

Ok, next.
What I tried to do:
delete device and restart windows - does not helps, the same yellow marked device is found after startup.

Roll back driver - this buttons is not active.

Automatic driver update - says that driver update is not needed.

Manual driver installation with the choice of the only single driver available in the list:

Delete device from manager, plug keyboard off PC. Shutdown PC. Start PC and plug keyboard in PC - nothing happens.

I found some thread in Internet about UpperFilters and LowerFilters. In my registry there was no such keys, so nothing to delete.

Also I found thread with some .reg files to fix dvd drive and keyboard issues. I tried those, but no help.

Tried some auto driver installations programs - they do not list yellow marked devices as needed for update.

I read some threads about disabling XHCI Mode in bios, but i have real BIOS, not UEFI, so i don't have this setting present.

I tried to run command: sfc.exe /scannow
In the end it said that problems are found and unable to fix.

I am programmer, my pc is clean enough. I don't download junk progs, don't visit port sites and warez sites, don't use optimizers and etc.

Yesterday i didn't installed anything, i just shutdown my PC and today the keyboard not work.
The keyboard work in bios time only, once OS is starting to load, it stops to work, so I can't even press F8 for safe mode.
Keyboard also works in bootable CDs and Linux Live CDs.

Now i plugged bluetooth keyboard and gladly it works, but it from tablet PC and so uncomfortable to use.

I really don't want to reinstall windows again. Just week passes since second time when no keyboard and mouse were working and a year since forst time.

From windows logs:
Device ACPI\PNP0303\4&224ad326&0 had a problem starting.
Driver Name: keyboard.inf
Class Guid: {4d36e96b-e325-11ce-bfc1-08002be10318}
Service: i8042prt
Lower Filters:
Upper Filters:
Problem: 0x27
Status: 0x0

Result of sfc.exe:
Beginning system scan. This process will take some time.
Beginning verification phase of system scan.
Verification 100% complete.
Windows Resource Protection found corrupt files but was unable to fix some
of them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For
example C:\Windows\Logs\CBS\CBS.log. Note that logging is currently not
supported in offline servicing scenarios.

This is the link for logs http://fbe.am/sof.
there was something wrong with logs, so i placed all files presented there in folder and run command second time. Still, the log much lesser than before created. Maybe worth to read logs dated 22 April in that folder I created.

Could anyone help me with anything?
This is definetly win 8.1 drivers problem. Not a keyboard.

Answer

For now, there is no known solutions. BUT, it possible to repair windows 8.1 in the good old meaning of that word.
You can download upgrade assistant or get an ISO of win 8.1 and run it or installer under loaded win 8.1. Follow steps and choose "Keep Windows settings, personal files, and apps" while passing through steps. At final stage windows will start installation and keep EVERYTHING! It much better than Refresh, so, it's the best current solution.

However... if not work mouse + KB, it's really hard to do so, because windows installer must be started from running windows.