How Can You Fix - Cannot log out and blank screen with cursor. Windows 8.1?

Cannot log out and blank screen with cursor. Windows 8.1

Dear Microsoft Community, can someone please help.
I have had an ongoing problem with my Dell XPS15 for several weeks.
This computer is only 5 months old.
Dell have tried various things but the problem still persists.
At various times I get a blank black  screen with just the cursor showing.
I can do nothing
with it at all (Ctrl/Alt/Del doesn't work) except force it off and on again.
This blank screen usually happens either when I turn the machine on in the morning or when I try to log off.
Sometimes the machine won't let me log off or shut down.
When I try this
nothing happens at all. Then I try to change to another user and I get the blank screen.

This problem doesn't happen every time I try to log off but perhaps on 1 in 5 occasions.
I have checked out the event logs relating to the time of the blank screen and some common logs are as follows:-
1) "The description for error ID 3 from source NvStreamSvc cannot be found.
Either the component that raises this event is not installed on your local computer or the installation is corrupted.
You can install or repair the local component."...
2) "Windows detected your registry file is still in use by other applications or services.
The file will be unloaded now.
The appications or services.....may not operate correctly afterwards."   

3) "The winlogon notification subscriber was unavailable to handle a a notification event.
These are the most common logs that I get.
Dell have tried uploading replacement chipsets and have reinstalled both the graphics drivers.
The problem still persists.
I also cannot do a system restore as this does not proceed either.
In any case the available dates are later than the original problem now so this wouldn't resolve it.
Can someone please help.
This is driving me mad.

Anwsers to the Problem Cannot log out and blank screen with cursor. Windows 8.1

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Hi Ben,
I resolved the printer issue by reinstalling the printer drivers.
On 1st June Dell did a complete restore of all the software on my PC to resolve the blank screen issue.
This resolved the issue until yesterday when it reoccurred again.
Since then I have removed some software packages which seem to have installed themselves.
These wer:-
a) PC Utilities Pro
b) Viewpoint Media Player
c) Download for free.
d) Search Protect
I had also installed a DVD drive software (VLC 2.1.4) since I added an external DVD drive but I'd rather not unistall this (unless I really need to) as it is actually useful.

So far today the computer has behaved itself.
I'll advise further if the problem re-occurs.
Regards,
Graham

Manually editing the Windows registry

Caution: Unless you an advanced PC user, please do not edit the Windows registry manually.

Because of this risk, we highly recommend using a trusted registry cleaner such as SmartPCFixer Using a registry cleaner automates the process of finding invalid registry entries, missing file references (like the one causing your MACHINE_CHECK_EXCEPTION error), and broken links within the registry. A backup is automatically created before each scan, with the ability to undo any changes in a single click, protecting you against the possibility of PC damage. The best part is that repairing registry errors can also dramatically improve system speed and performance.

• Click the Start button.
• Type "command" in the search box... DO NOT hit ENTER yet!
• While holding CTRL-Shift on your keyboard, hit ENTER.
• You will be prompted with a permission dialog box.
• Click Yes.
• A black box will open with a blinking cursor.
• Type "regedit" and hit ENTER.
• In the Registry Editor, select the Error 0x9C-related key (eg. Windows Operating System) you want to back up.
• From the File menu, choose Export.
• In the Save In list, select the folder where you want to save the Windows Operating System backup key.
• In the File Name box, type a name for your backup file, such as "Windows Operating System Backup".
• In the Export Range box, be sure that "Selected branch" is selected.
• Click Save.
• The file is then saved with a .reg file extension.
• You now have a backup of your MACHINE_CHECK_EXCEPTION-related registry entry.

The next steps in manually editing your registry will not be discussed in this article due to the high risk of damaging your system. If you would like to learn more about manual registry editing, please see the links below.

Recommended Method to Fix the Problem: Cannot log out and blank screen with cursor. Windows 8.1:

How to Fix Cannot log out and blank screen with cursor. Windows 8.1 with SmartPCFixer?

1. Download SmartPCFixer . Install it on your computer.  Click Scan, and it will perform a scan for your computer. The errors will be shown in the scan result.

2. After the scan is finished, you can see the errors and problems need to be repaired. Click Fix All.

3. The Repair part is done, the speed of your computer will be much higher than before and the errors have been removed. You can also use other functions in SmartPCFixer. Like dll downloading, windows updating and print spooler error repair.

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