Windows 10 Black Screen & Mouse Cursor After Update: Desktop Not Appearing, System Restore & Scan

Since yesterday (two days after the critical update of Windows 10) does not appear desktop, after logging in to the account appears a black screen with the cursor. Apparently I managed to restore the system to the point before the update and even one more earlier (beginning of April), but it did not do anything. Scanning the system did not give anything, emergency mode also loads with a black screen. Help!!
Or maybe someone will tell me how to run the system update to install it, because it was a solution for another failure, when I did not develop the start menu, but now I do not know how to enter the settings and run the update?

In safe mode the system works?
https://support.microsoft.com/pl-pl/help/12376/windows-10-start-your-pc-in-safe-mode

In the emergency mode I enter (I think), the screen resolution changes as I see after the login screen) but there is also a black screen with the cursor.

After pressing alt + ctrl + del, the task manager is turned on? Can you run an explorer or browser from its level?

If so, please include in the attachment the logs from the FRST scan (Frst.txt and Addition.txt):
http://www.bleepingcomputer.com/download/farbar-recovery-scan-tool/

I made files in the connector

The logs show:
Error: (04/14/2018 11:27:15 AM) (Source: Application Hang) (EventID: 1002) (User:)
Description: Taskmgr.exe version 10.0.16299.248 has stopped working with Windows and has been shut down. To check for more information about this problem, check the problem history in the Security and Maintenance window in Control Panel.
Process ID: 1180
Start time: 01d3d3d1e0d1e301
End time: 32
Application path: C: \ Windows \ System32 \ Taskmgr.exe
Report ID: ac70093a-342e-42a1-bb48-9d6c7c49af1f


Add a screen to the entire window with:
CrystalDiskInfo: http://portableapps.com/apps/utilities/crystaldiskinfo_portable

Check the framework too -> www.memtest.org (make at least two complete runs)

Uninstall Avast for now.

Next to frst.exe, create a Fixlist.txt file with the contents:
HKU \ S-1-5-21-328461319-3118469815-3519216010-1001 \ ... \ RunOnce: [Application Restart # 0] => C: \ Windows \ System32 \ Taskmgr.exe [1313016 2018-02-10] (Microsoft Corporation)
AppInit_DLLs: C: \ Windows \ system32 \ nvinitx.dll => No file
AppInit_DLLs:, C: \ WINDOWS \ system32 \ nvinitx.dll => No file
Lsa: [Notification Packages] scecli C: \ Program Files \ TrueKey \ McAfeeTrueKeyPasswordFilter
SearchScopes: HKLM -> DefaultScope {0633EE93-D776-472f-A0FF-E1416B8B2E3A} URL = hxxp: //www.bing.com/search? Q = {searchTerms} & form = ASUTDF & pc = NP06 & src = IE-SearchBox
SearchScopes: HKLM -> {0633EE93-D776-472f-A0FF-E1416B8B2E3A} URL = hxxp: //www.bing.com/search? Q = {searchTerms} & form = ASUTDF & pc = NP06 & src = IE-SearchBox
SearchScopes: HKLM-x32 -> DefaultScope {0633EE93-D776-472f-A0FF-E1416B8B2E3A} URL = hxxp: //www.bing.com/search? Q = {searchTerms} & form = ASUTDF & pc = NP06 & src = IE-SearchBox
SearchScopes: HKLM-x32 -> {0633EE93-D776-472f-A0FF-E1416B8B2E3A} URL = hxxp: //www.bing.com/search? Q = {searchTerms} & form = ASUTDF & pc = NP06 & src = IE-SearchBox
SearchScopes: HKLM-x32 -> {67A2568C-7A0A-4EED-AECC-B5405DE63B64} URL = hxxp: //www.google.com/search? Sourceid = ie7 & q = {searchTerms} & rls = com.microsoft: {language}: { referrer: source?} = {& e & oe inputEncoding} = {} & outputEncoding rlz = 1I7ASUT
SearchScopes: HKU \ S-1-5-21-328461319-3118469815-3519216010-1001 -> DefaultScope {0633EE93-D776-472f-A0FF-E1416B8B2E3A} URL =
SearchScopes: HKU \ S-1-5-21-328461319-3118469815-3519216010-1001 -> {0633EE93-D776-472f-A0FF-E1416B8B2E3A} URL =
SearchScopes: HKU \ S-1-5-21-328461319-3118469815-3519216010-1001 -> {6A1806CD-94D4-4689-BA73-E35EA1EA9990} URL =
CHR HKLM-x32 \ ... \ Chrome \ Extension: [eofcbnmajmjmplflapaojjnihcjkigck] - hxxps: //clients2.google.com/service/update2/crx
CHR HKLM-x32 \ ... \ Chrome \ Extension: [gomekmidlodglbbmalcneegieacbdmki] - C: \ Program Files \ AVAST Software \ Avast \ WebRep \ Chrome \ aswWebRepChrome.crx
CustomCLSID: HKU \ S-1-5-21-328461319-3118469815-3519216010-1001_Classes \ CLSID \ {1BF42E4C-4AF4-4CFD-A1A0-CF2960B8F63E} \ InprocServer32 -> C: \ Users \ Krzysztof \ AppData \ Local \ Microsoft \ OneDrive \ 17.3.6943.0625 \ amd64 \ FileSyncShell64.dll => No file
CustomCLSID: HKU \ S-1-5-21-328461319-3118469815-3519216010-1001_Classes \ CLSID \ {7AFDFDDB-F914-11E4-8377-6C3BE50D980C} \ InprocServer32 -> C: \ Users \ Krzysztof \ AppData \ Local \ Microsoft \ OneDrive \ 17.3.6943.0625 \ amd64 \ FileSyncShell64.dll => No file
CustomCLSID: HKU \ S-1-5-21-328461319-3118469815-3519216010-1001_Classes \ CLSID \ {82CA8DE3-01AD-4CEA-9D75-BE4C51810A9E} \ InprocServer32-> C: \ Users \ Krzysztof \ AppData \ Local \ Microsoft \ OneDrive \ 17.3.6943.0625 \ amd64 \ FileSyncShell64.dll => No file
ShellIconOverlayIdentifiers: [OneDrive1] -> {BBACC218-34EA-4666-9D7A-C78F2274A524} => -> No file
ShellIconOverlayIdentifiers: [OneDrive2] -> {5AB7172C-9C11-405C-8DD5-AF20F3606282} => -> No file
ShellIconOverlayIdentifiers: [OneDrive3] -> {A78ED123-AB77-406B-9962-2A5D9D2F7F30} => -> No file
ShellIconOverlayIdentifiers: [OneDrive4] -> {F241C880-6982-4CE5-8CF7-7085BA96DA5A} => -> No file
ShellIconOverlayIdentifiers: [OneDrive5] -> {A0396A93-DC06-4AEF-BEE9-95FFCCAEF20E} => -> No file
ShellIconOverlayIdentifiers: [OneDrive6] -> {9AA2F32D-362A-42D9-9328-24A483E2CCC3} => -> No file
ShellIconOverlayIdentifiers-x32: [OneDrive1] -> {BBACC218-34EA-4666-9D7A-C78F2274A524} => -> No file
ShellIconOverlayIdentifiers-x32: [OneDrive2] -> {5AB7172C-9C11-405C-8DD5-AF20F3606282} => -> No file
ShellIconOverlayIdentifiers-x32: [OneDrive3] -> {A78ED123-AB77-406B-9962-2A5D9D2F7F30} => -> No file
ShellIconOverlayIdentifiers-x32: [OneDrive4] -> {F241C880-6982-4CE5-8CF7-7085BA96DA5A} => -> No file
ShellIconOverlayIdentifiers-x32: [OneDrive5] -> {A0396A93-DC06-4AEF-BEE9-95FFCCAEF20E} => -> No file
ShellIconOverlayIdentifiers-x32: [OneDrive6] -> {9AA2F32D-362A-42D9-9328-24A483E2CCC3} => -> No file
ContextMenuHandlers5: [Gadgets] -> {6B9228DA-9C15-419e-856C-19E768A13BDC} => -> No file
Task: {2332FFE4-BDD8-4882-95D6-395934A8F462} - \ Microsoft \ Windows \ Setup \ GWXTriggers \ ScheduleUpgradeTime -> No file No file No file No file No file No file No file No file No file No file No file No file No file No file C: \ WINDOWS \ system32 \ pcalua.exe -a "C:\Program Files\TrueKey\Mcafee.TrueKey.Uninstaller.Exe"
Task: C:\WINDOWS\Tasks\CreateExplorerShellUnelevatedTask.job => C:\WINDOWS\explorer.exe

First I think I know what and how because the screen in the annex, but the rest, please, not especially, how to uninstall Avasta and what should I put in the file?

Or maybe tell me whether it is possible to run a system update from the task manager level? because I would like to try it too, once the update helped me with the start menu

In the file Fixlist.txt you have to put what I gave.

You can run Windows Update, for example:
explorer ms-settings: windowsupdate
or run a cmd window and there
ms-settings: Windows Update

Avast uninstall by running:
control.exe / NAME. Microsoft.ProgramsAndFeatures
or
appwiz.cpl

By. SMART efficient. You were to do the memtest - give the result. Here is the memtest installer for pena:
http://memtest.org/download/5.01/memtest86+-5.01.usb.installer.zip
Paste what he posted @Kolobos in post # 6, from line # 19 in notepad, save as fixlist.txt where you have FRST.exe and click "Repair" button to start FRST.