Question AMD Radeon HD 7800 Series and Three monitors

[SCIIT]

Hello,

I'm trying to setup an old computer with a three monitor configuration. The graphics card has 2 DVI (one single link and one dual link it appears), 1 HDMI, and 1 Display port.

We have 3 monitors, 2 monitors only have 1 HDMI port and 1 VGA port. The other has HDMI, VGA and Display.

The configuration we're trying is currently 2 DVI to HDMI cables, and 1 Display cable. For some reason only two monitors show up, and the third shows up but has small resolution and won't become active (says it's disconnected & the settings wont change. This is in the display settings). The AMD Radeon software only detects two monitors.

I've tried doing just 1 DVI, 1 Display Port, and 1 HDMI to get it working. Nothing works. Weirdly enough, when I unplug one monitor, the "disconnected" one turns active.

There was a similar thread awhile ago in 2016 https://forums.tomshardware.com/threads/ati-radeon-hd-7800-series-with-3-monitors.2670920/, but it didn't give me much information.

Not sure if buying this star tech adapter would really change anything.

Any insight/info would be appreciated to get this working.

I've also checked windows updates and installed drivers/even rolled back. Nothing has worked as of yet.

Thanks

 

[Lutfij]

Welcome to the forums, newcomer!

HD 7800 is a series, what is the exact model for the GPU. On second thoughts, please pass on your specs like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

As for the cable you're using, best pass on a link to them.

 

[SCIIT]

Welcome to the forums, newcomer!

HD 7800 is a series, what is the exact model for the GPU. On second thoughts, please pass on your specs like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

As for the cable you're using, best pass on a link to them.

I have no idea what the GPU is, it says AMD Radeon 7800 Series in the settings (device manager).

I do not have these specs on hand and I cannot get them currently, nor would I be able to get the cable links? Everything is old. I know it's running a 3rd gen Intel CPU.

Why would the chassis even matter?