Black screen after update

[pcpaul]

Sorry I didn’t get a notification of your other reply.
Its a manufactured system from HP, Z820 Workstation

[Madmatt2006]

If you boot off a windows dvd or off any bootable cd/dvd is the picture staying on? if so, I’d boot off windows cd and do a system restore to before it crashed…

A friend has similar problem, he left it on and forgot about it and 2 days later went back to it and it was on lol

[pcpaul]

Re OP system restore fails

[Antman]

WindX previously installed as Win8 upgrade. System functioned properly.
Unattended Windows Update resulted in black screen.
Power on shows Windows boot process to black screen.
No onboard video port on this platform -

http://www8.hp.com/us/en/campaigns/workstations/z820.html

Yes - you can have a failed video configuration or card and still see the POST screen and initial Windows boot screen (spinning dots).
A successful boot from any linux live CD would prove hardware.

User reports a non-standard set of recovery options are presented from boot media. This is not consistent with Windows 10 design specs and implies a communication failure between tech support and end-user.
Please confirm:
Boot from install media.
Choose repair
Navigate to this screen (sorry, but I do not have a collection of the images or a walkthrough) -
[ATTACH]564[/ATTACH]

Please confirm that the options pictured above are (or are not) available.
I can only assume that these options will be available.
Select Windows Startup Settings. This will reboot Windows to the recovery partition where you will have the option to select Safe Mode.

[pcpaul]

I can run Ubunu 14.04.2 and view it.
I have attached a picture of the RE I see when using the recovery usb or dvd downloaded from Microsoft for Win10Pro (Original OS Win8.1Pro). Should I be using the Win8.1 installation disc?[ATTACH]570[/ATTACH] [ATTACH]571[/ATTACH] [ATTACH]570[/ATTACH] [ATTACH]571[/ATTACH] [ATTACH]572[/ATTACH]

[Antman]

Interesting.

This post was made to inform you that someone is investigating a solution.

[Antman]

Humor me.

Disconnect the monitor cable (I assume HDMI or DP) from the video card port on the PC.
Power on.
Wait just a little too long. Get coffee.
Connect video cable.

What happened?

We are testing a possible video driver update that is throwing a resolution to the monitor that the monitor does not support.

[pcpaul]

Nothing on screen

[Antman]

connect to the other port on the video card

[pcpaul]

I’m using the dvi connection because that’s all my monitor has

[pcpaul]

There are 2 other ports that look a bit like hdmi but there not

[Antman]

[MEDIA=youtube]3za5fsfYftQ[/MEDIA]

[Antman]

I am suggesting to use the method where the tech shows to archive the current registry and use the existing backup from ..\regback.

[pcpaul]

I’ve followed the instructions and I now have the screen which includes “startup settings”(Which I previously haven’t had). Should I continue following the tech or is there something you wanted to try from here?

[Antman]

Start in Safe mode, or not. Protect your valuable data.