HP Pavilion a450n PC Desktop Logo
Posted on Apr 26, 2011
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I want to know if I can hook up a second monitor to this system?

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  1. Make sure that both of the monitors are attached to the Pavilion. This will involve using one blue VGA cable for the blue slot of the back of the computer and another white DVI cable plugged into the wider, white slot.
  2. Click the "Start" button, then click the "Control Panel" icon.
  3. Click "Appearance and Personalization" to open the Display Settings.
  4. Click "Adjust Screen Resolution" to enter the Screen Display options.
  5. Expand the drop-down list next to "Multiple displays" by clicking on the small triangle. Click "Extend these displays."
  6. Select "OK" when a confirmation box appears.
  7. Move the images of the two monitors so that they show the position of the monitors in real life. Click and drag to move an image.
  8. Click "OK" to finish setting up.
  9. Exit the Control Panel. You will now be able to use both of the screens.

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The HP Pavilion a450n video card does not support 2 monitors. You can hook up a monitor and a TV at the same with the current video card it has. If you wanted 2 monitors you can replace the AGP video card with a new one that has 2 monitor outputs. You will need to get an AGP video card with 2 monitor outputs (DVI or VGA), open up the case, remove the current video card and replace it.
See the HP website for more technical information on this computer:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00058235&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&site=null&key=null&product=392522#N59
I hope this helps.

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http://direct2dell.com/one2one/archive/2006/11/19/3648.aspx 

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