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05-11-2012 06:01 PM - edited 05-11-2012 06:12 PM
The integrated video adapter in your PC doesn't support dual monitors You have a three of choices:
Install a discrete video card -----> Better performance and costs slightly more
Use a USB to video adapter -----> Less performance but costs less (USB to VGA or DVI)
USB connectable Monitor ---------> Lower performance, costs more but includes the monitor.
Video cards that will work with the 300 watt power supply in your PC.
$50--->NVIDIA GT 430 9.6 GB/s --single slot width
$65--->NVIDIA GT 520 8 GB/s -- single slot width
$70---> NVIDIA GT 430 22.4 GB/s – single slot width
$80--->NVIDIA GT 440 25.6 GB/s -- single slot width
$110-->NVIDIA GT 240 1GB DDR5. 54.4 GB/s single slot width This card doesn't support DirectX 11 which is optionally used in some of the newer PC games but it is an excellent performer.
My recommendation is to go with the video card. Review the above video cards against your video port requirements.
These HP 'how-to" articles should be helpful.