HP EliteDesk 800 G1 SFF: Using VGA and DisplayPort simultaneously for dual monitor setup

[Shujee]

So the title says it all. I'm trying to setup dual monitors on my HP EliteDesk 800 G1 SFF. Here's my setup:

1. Primary monitor (Acer B223W) is on DisplayPort and displays things normally.

2. Secondary monitor (HP LP2065) is on VGA port.

The problem is that my second monitor port never gets a signal from the machine and soon goes to sleep mode. Connecting the second monitor changes my primary display to an empty desktop (no icons, no taskbar, just a plain wallpaper), which I think means that it is trying to use my VGA monitor as primary display.

The VGA monitor however never seems to display anything. I have successfully switched my primary display back to first monitor too, but that doesn't do any go either.

[GR1 · Accepted solution]

Dear Customer,

Welcome to the HP Consumer Support Forum!!

Please try and update the following video driver, chipset and also the BIOS:

Intel Graphics Driver (64-bit) (International):

http://h20564.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=5387481&swItemId=vc_140415_1&swEnvOid=405...

Intel Chipset driver:

http://h20564.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=5387481&swItemId=vc_124826_1&swEnvOid=405...

BIOS:

http://h20564.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=5387481&swItemId=vc_147068_1&swEnvOid=405...

In case the issue still persists, please swap the VGA cables and the monitor cables once and check.

Try and clear CMOS using the steps below:

1. Turn off the computer and disconnect the power cord from the power outlet.
2. Remove the access panel.
3. On the system board, press and hold the CMOS button for 5 seconds.
4. Replace the chassis access panel and reconnect the power cord.
5. Turn on the computer and allow it to start. 

Hope this helps, for any further queries reply to the post and feel free to join us again.

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Thank You,
GR1
Although I am an HP employee, I am speaking for myself and not for HP