System details .. Mobo: ASUS Z87-PRO. CPU: Intel Core i7-4770K CPU @ 3.5GHz - x64-based. RAM: 2x 16GB Kingston HyperX paired - 31.9GB usable. Power: 1200W. Disks: No disk changes, with system disk 3.63TB free. Op Sys: Windows 10 Pro v21H1 Build 19043.1889 64-bit.
Monitor details .. Mon 1: ASUS VS228H-P is my default monitor. Mon 2: ASUS VS228H-P. Mon 3: ASUS VS228H-P. Mon 4: Samsung 226BW.
Initial graphics cards and monitor connections ..
- Nvidia GeForce 8800GT in slot PCIEX16_1 attached to Mon 1 & Mon 2 both using DVI-D.
- Nvidia GeForce 8400GS in slot PCIEX16_2 attached to Mon 3 using DVI-D & Mon 4 using VGA. The monitors are in Windows 10 extended mode. This works perfectly.
Planned graphics cards and monitor connections ..
- EVGA GeForce GTX 1650 Super SC Ultra Gaming, 4GB GDDR6 04G-P4-1357-KR in slot PCIEX16_1 attached to Mon 1 using HDMI & Mon 2 using DVI-D.
- Nvidia GeForce 8800GT in slot PCIEX16_2 attached to Mon 3 & Mon 4 both using DVI-D. The Nvidia GeForce 8400GS would no longer be used.
I installed the cards in their slots and installed the latest driver for the EVGA card, and Mon1 & Mon 2 worked as expected.
However, Mon 3 showed ‘DVI no signal’. Mon 4 gave the alternating ‘Analog’ then ‘Digital’ message followed by ‘Check signal cable – Digital’. Both DVI-D cables were installed correctly. The Q-Code settled on A0 just as before the change - no component LEDs stayed on.
To test whether the issue was with the slot and not with the card, I replaced the Nvidia GeForce 8800GT card with the 8400GS and changed the Mon 4 cable to VGA. Mon 3 showed ‘DVI no signal’ as before and Mon 4 gave the alternating ‘Analog’ then ‘Digital’ message then no message and a blank screen. Same result as before. The Q-Code settled on A0 just as before the change - no component LEDs stayed on.
It seems that the installation of the EVGA card is somehow preventing slot PCIEX16_2 from working.
Can you explain what I've missed or misunderstood, and how to solve this?
I appreciate your help. Cheers.