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Windows 7: Triple screen monitor set-up

28 Mar 2012   #1

Windows 7 64 bit
Triple screen monitor set-up

Hey guys,

New here but got a problem which I hope you can help me with.

I have a Dell XPS L502X Laptop which I got in October (2011) but due to a HD failure I had to send it back to get a replacement HD. Now I have it back I can't seem to triple screen. I'm using a Dell SP2309W monitor (from HDMI) and my 21" Generic Non-PnP Monitor at (from mini display port converter to VGA at 720p), however I have tried the following process with my 32" LG TV (1080X1920) and the Dell monitor. The other screen is my laptop screen (1080X1920)

When I try to extend the picture to the non dell monitor, through the mini display port and VGA converter I get the error message 'Unable to change display settings', thus limiting myself to 2 screens (third world problems I know).

The odd thing is that when I mirror the display from 1 and 2, the mirror is successful and mirrored screen 1 appears on the monitor which I with to be extended. I have also tried the VGA cable with regular output with my PC and this works fine.

I have an NVIDIA GeForce GT 525M with fully updated drivers (last ones are for the end of Feb I think), have reinstalled these twice and the whole set-up (of 3 screens) worked fine before I got a new HD (and my system was effectively restarted)

Any help would be great,


My System SpecsSystem Spec


 Triple screen monitor set-up

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