Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


DaveDog

336 posts

Ultimate Geek


#112034 23-Nov-2012 21:53
Send private message

OK - I've wasted several hours today trying to sort this out - It's now time to throw it out there...

We've got a HP dc7800p SFF. It fell over and died and has had a Windows reinstall. The dual monitor setup now will not work. The machine recognises that two monitors are connected, but one monitor does not receive a video signal.

Setup:

It's a run of the mill PC running Windows 7 Pro (32bit). The video card in question is a Nvidia GEForce and I've tried it with the default windows drivers - plus I have been to the Nvidia site and downloaded the most recent driver too. Plugged into the video card is a HP DVI Y Cable DMS-59 to Dual VGA Connector.

Device Manager shows a fully functioning Video card and monitors - but also listed in there is a PCI Serial Port & PCI Simple Comms Controller without drivers...

Making me crazy!


Create new topic
dontpanic42
1574 posts

Uber Geek


  #722076 23-Nov-2012 22:41
Send private message

Have you gone into the screen resolution menu and made sure the desktop is set to display on the second monitor?

Control Panel\All Control Panel Items\Display\Screen Resolution (Adjust Resolution)

You may need to select to extend the desktop onto the second monitor under one of the drop down menus.

HTH

 
 
 
 

Get easy to use, easy to install Norton antivirus protection against advanced online threats (affiliate link).
DaveDog

336 posts

Ultimate Geek


  #722864 26-Nov-2012 09:36
Send private message

OK - I've been and had a closer look at this...

When two monitors are connected - port 1 does not display any image regardless of the settings. If I disconnect the monitor from port 1, the one connected to port 2 works as the primary display. If I disconnect port 2, then I can't see anything.

The monitor reports no signal... Our in-house IT people want to buy a new video card - Surely it is something to do with the two PCI devices that have no drivers.

Oblivian
6942 posts

Uber Geek

ID Verified

  #722872 26-Nov-2012 09:55
Send private message

F10 on startup, make sure onboard PCI video device is turned off (if it is a dual head card and has its own GPU that is).

HP/Compaq are renound for picking onboard PCI video over cards. If the card is infact fine you should see the bIOS screen on both at a default 800x600 or so res during startup before it hits the driver init stage either way.

Chances are, now the onboard port is active as the second monitor and you need to tell it to use the card (port 2/3) instead.

Those 2 PCI devices missing drivers will be a red hearing. I take it you did not use the HP restore CD with the drivers injection that then asks for an OS. You can try HP SoftPaq Downloader to fill in the gaps, but doubt they are related (usually the IDE/Intel controller misreporting)



DaveDog

336 posts

Ultimate Geek


  #723549 27-Nov-2012 11:56
Send private message

Once again CoffeeBaron saves the day - Thanks for that...

coffeebaron
6072 posts

Uber Geek

Trusted
Lifetime subscriber

  #723566 27-Nov-2012 12:17
Send private message

No worries Dave, was a rogue duplicate screen, I.E. widows thought there were 3 screens, so disconnected screen "2" and did extend desktop to screen "3".




Rural IT and Broadband support.

 

Broadband troubleshooting and master filter installs.
Starlink installer
Wi-Fi and networking
Cel-Fi supply and installer - boost your mobile phone coverage legally
Rural Broadband RBI installer for Ultimate Broadband and Full Flavour

 

Need help in Auckland, Waikato or BoP? Click my email button, or email me direct: [my user name] at geekzonemail dot com


Create new topic





News and reviews »

Samsung Announces Galaxy AI
Posted 28-Nov-2023 14:48


Epson Launches EH-LS650 Ultra Short Throw Smart Streaming Laser Projector
Posted 28-Nov-2023 14:38


Fitbit Charge 6 Review 
Posted 27-Nov-2023 16:21


Cisco Launches New Research Highlighting Gap in Preparedness for AI
Posted 23-Nov-2023 15:50


Seagate Takes Block Storage System to New Heights Reaching 2.5 PB
Posted 23-Nov-2023 15:45


Seagate Nytro 4350 NVMe SSD Delivers Consistent Application Performance and High QoS to Data Centers
Posted 23-Nov-2023 15:38


Amazon Fire TV Stick 4k Max (2nd Generation) Review
Posted 14-Nov-2023 16:17


Over half of New Zealand adults surveyed concerned about AI shopping scams
Posted 3-Nov-2023 10:42


Super Mario Bros. Wonder Launches on Nintendo Switch
Posted 24-Oct-2023 10:56


Google Releases Nest WiFi Pro in New Zealand
Posted 24-Oct-2023 10:18


Amazon Introduces All-New Echo Pop in New Zealand
Posted 23-Oct-2023 19:49


HyperX Unveils Their First Webcam and Audio Mixer Plus
Posted 20-Oct-2023 11:47


Seagate Introduces Exos 24TB Hard Drives for Hyperscalers and Enterprise Data Centres
Posted 20-Oct-2023 11:43


Dyson Zone Noise-Cancelling Headphones Comes to New Zealand
Posted 20-Oct-2023 11:33


The OPPO Find N3 Launches Globally Available in New Zealand Mid-November
Posted 20-Oct-2023 11:06









Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.







Norton for Gamers