Windows 7: Proper way to add video card after using MB video ports

What is the right proceedure for adding a video card to my system. I have been using my on-board ports after having an issue with an inserted PCIe card.

Should I uninstall the ATI Asus supplied software for the on-board video and uninstall the video adpater (on mother board ) via device manager..then power off...insert the PCIe card...reattach the monitors..and then boot up ?

Then when the new device is found...cancel the windows driver setup and run the drivers supplied by the manufaturer ?

I'm trying to solve an issue psoted earlier in Hardware/Devices forum:
Suddenly get blank/dark W7 Pro screens only ?

Here's an update to that issue:

I removed my existing new dual DVI card that had been working fine for months...and connected both monitors to the on-board ports...and voila...system started as normal.

But...if I re-insert the video card (and set bios to GFX0 )...or remove it and insert a second working PCI video card (and set bios to PCI ) ...I immediately get the single beeb and black screen.

Removing card ( PCIe or PCI ) and reattaching monitors to on-board ports solves issue...re-inserting either card (without attaching monitors ) causes single beep and black screen



Switching video option in bios has no effect whether using PCI or PCIe card when installed.

System works ok if I leave the on-board ports active with monitors and bios at IGFX settings...if I leave one monitor attached to on-board port...and insert other card ( either PCI or PCIe) and attach second monitor to the card...then the single beeb and black screens returns ?

Neither PSU or new memory had any effect. Using original PSU and memory without issues IF I use the on-board ports only. Have two large screen led's and would love to get both monitors back on the higher resolution dual DVI card ?

Thanks...TR

Try updating your motherboard BIOS

M4A785-M BIOS 0906 2010/4/22

This motherboard had an issue with detecting new ATI PCI-e cards (HD5*** series)

single beep os ASUS/AMI BIOS usually indicates that it has passed post ok. Your procedure sounds ok. Is there also a setting in the BIOS to disable souround view. This should turn off the onboard card altogether. You are attaching the monitors to the new PCI-e card and not the onboard vga.

What card is it you have got and what is the exact PSU.

Thanks...tried the new bios but no change...card is a EVGA GeForce 7600 GT dual DVI card. The bios does have a "surround view" option but it's grayed out...so no changes can be made to that setting.

However...I finally found someone at the office that would let me try the card in their system with an open PCIe slot and same thing there...system starts for a second or 2 and shuts down...have to assume that the card "went bad" somehow from the time I left in the am 'til I returned after 5 pm a week or so ago the day the problems started.

Ordered a newer dual DVI card online yesterday so hopefully by the end of the week I'll have both my monitors off the MB ports and up and running again with the DVI connections !

Thanks for all your efforts on this...

Tim