Question No signal on monitor

Jan 3, 2021
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Hi, I have an older tower (HPZ230 ff) with no HDMI ports. It only has 3 x display ports.
I have tried to connect to a monitor with:
DP - DVI
DP- HDMI
The monitor scans for a signal but doesn’t find anything.
But none of these work, could it be something to do with the graphics card installed this is a NVIDA. Any help would be much appreciated.
 
Jan 3, 2021
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mini dp - dp
This works, thank you. But now there is an issue with the resolution it won’t let me change it from 640x480. (Box is greyed out)
So I’m using:
NVIDA NVS510 - mini dp - display port - monitor is hp lp2475w
The system is windows 7 professional. Do you have any advice on this?
 
Jan 3, 2021
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what the exact model of the monitor? it might have windows 7 driver
Yes it does have windows 7. Last update 2006. This pc and monitor have worked together before i had it. May have used a different connection cable. Do you think an update would work if I can get it connected to the internet?
 

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