Windows 8.1 doesn't start after update. BLACK SCREEN AFTER LOGIN

Before all, sorry my english, I'm brazilian and don't found the solution on the brazilian version of HP website.
After I did the updates, the system ask to restart the notebook, so I did it. And now, when I do the login, after the password page, the Windows doesn't starts. Just a Black Screen appears.
I can't open the right side window to acces the configurations, and this laptop doesn't have a battery to take out and put in again.
I had already restore the system.
So, I use my laptop to work, and it has only 4 days of use.
I need help! Thanks!

Hi,
Run through the following procedure.
Boot the computer normally and log-in.
At the black screen, hold down the ctrl and alt keys and press delete.
Select Task Manager.
Click on File and select Run new task.
Type cmd.exe - also enter a tick in the box for 'Create this task with administrative privileges' - and click Ok.
Type in the following command ( including spaces ) and hit enter.
Dism /Online /Cleanup-Image /RestoreHealth
This will take a while to complete, but when it’s finished, restart the notebook.
If the screen is still black after you log-in, once again, hold down the ctrl and alt keys and press delete.
Select Task Manager.
Click on File and select Run new task.
Type cmd.exe - also enter a tick in the box for 'Create this task with administrative privileges' - and click Ok.
Type in the following command ( there's a space between sfc and the / ) and hit enter.
Sfc /scannow
When the scan has finished, check that the result is ‘No integrity violations’, then type exit and hit enter.
Restart the notebook again.
Any change?
Regards,
DP-K
****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
****I don't work for HP****
Microsoft MVP - Windows Experience

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