Monitor going black after typing in password.

[timber63401]

Have a HP Pavillion desktop only about a year old. It did an automatic update 2 days ago and havent been able to get on it sense. Goes to the screen with the background that you put your password into and almost insatntly goes to black afterwords. Put on a VGA cable and tried that. Any advice would be appreciated. Thanks.

[Grzwacz]

Hi

That is a very strange symptom.

You may have received the Fall Creator's Update.

You have video when signing in but lose it after signing in.

The only things I can think of would be to try booting in safe mode. 

Try to uninstall the current graphics driver using Device Manager or Programs and Features. This option may not be available in safe mode.

Use Windows 10 installation media to do a Microsoft System Restore prior to this last update.

Reboot your PC using either recovery scenario and see what happens.

Very unusual symptom.

Tom

[mdklassen]

> It did an automatic update 2 days ago and haven't been able to get on it sense.

> Goes to the screen with the background that you put your password into

> and almost instantly goes to black afterwards. 

This is a well-known problem, caused by Microsoft Updates (made available on September 12, 2017) and HP Updates that cause your symptom.

Within this forum, do a search for "black screen", and you'll find many articles from many people with the same symptoms.

Bypass: enter your password, and wait 20 minutes. The normal "desktop" eventually will appear.

Run the HP Support Assistant, to download and apply a "fix" for this "black screen" problem.

Reboot, and your computer will be fine.

[timber63401]

Tried that. After about 10 minutes it showed a black screen that said input signal not found.

[Grzwacz]

Hi

What remediation technique did you try?

I think you have to go back to a previous installation of Windows 10.

You said you received an update.

Do you know where the update came from (HP or Microsoft)?

Tom

[mdklassen]

>> wait 20 minutes

> Tried that. After about 10 minutes, it showed a black screen that said input signal not found.

The monitor generates that message, after your computer turns-off the monitor, after some minutes.

In Windows 10, the default settings in the "Power" Control Panel item, is 10 minutes, as you have observed.

Your computer continues to run, after those 10 minutes, but, to save electrical power, it has told the monitor to power-down.  Wiggle the mouse, or press the SHIFT key on the keyboard, to wake-up the monitor, and then wait the rest of the 20 minutes.

[Grzwacz]

Hi

This does not appear to be a sleep problem.

Hey, I could be wrong but you never know until it is solved.

Tom

[mdklassen]

> This does not appear to be a sleep problem.

Correct.

The computer is not going to "sleep" after just 10 minutes.

The default "sleep" setting in Windows 10 is 30 minutes.

The default setting for turning-off the monitor is 10 minutes, as observed. 

The computer continues to run, until the 30-minute mark.

[Grzwacz]

Hi

So what is happening?

Every initial Windows setup I have done has one or two minute monitor shutdown settings . Sleep will not work until you update various drivers.

The OP loses video after password input.

Sounds like a bad Windows or HP update to me.

Your guess is as good as mine.

Tom

[timber63401]

Thanks for all the help. Got it to come up but now running super slow and when monitor goes to sleep i cant wake it up with the mouse. On a side note, ever since Ive had it if you leave it alone for 5 minutes you have to put in password to get on it again. Is thee a way to override that? Thanks again for everyones time. Im gonna keep messing with it and see what I can get done.