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No signal to monitor when logging into windows 7 after installing Nvidia drivers

Hi,

I replaced a AMD 6850 for a Geforce GTX 750 ti in a friends computer that has a Sabertooth 990fx and I'm having this weird bug. After installing the drivers and rebooting, as soon as the windows logo goes away to log in into Windows the monitor stops getting a signal. (black screen) I know the computer is in Windows since I can hear the log in sound and see hard drive activity.

In order for it to boot, I have to go in safe mode and remove the drivers and delete them so on the next boot it can run the "standard video drivers".

I've tried many different driver versions and so many things that it would take quite a while to post all of it.

One thing that worked was to install windows 7 on another hard drive in the same computer. The thing is, my friend would prefer not to format.

Would anyone have any idea how to solve this problem?

Thank you

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Did you remove all AMD drivers and CCC before installing your new GPU?

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Sounds like it's not detecting the VGA card. Did you try legacy mode?

Main: i7 2600 | ASUS P8Z68-V | 2x4GB Vengeance 1600 | GTX 580 | WD Blue 1TB | Antec TP-650C | NH U12S | W7 x64

Backup: X6 1090T | MSI K9A2 Platinum | 4x2GB XMS2 800 | GTX 550Ti | WD Blue 1TB |  Antec VP-450 | CM TX3 | W7 x64

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Did you remove all AMD drivers and CCC before installing your new GPU?

I couldn't remove everything since I needed the SATA and USB drivers. Anything related to GPU from AMD is removed.

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Sounds like it's not detecting the VGA card. Did you try legacy mode?

Not detecting the video card? I get the motherboard logo and windows loading screen.

Legacy mode? I did not try that.

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Not detecting the video card? I get the motherboard logo and windows loading screen.

Legacy mode? I did not try that.

Legacy mode instead of UEFI.

Main: i7 2600 | ASUS P8Z68-V | 2x4GB Vengeance 1600 | GTX 580 | WD Blue 1TB | Antec TP-650C | NH U12S | W7 x64

Backup: X6 1090T | MSI K9A2 Platinum | 4x2GB XMS2 800 | GTX 550Ti | WD Blue 1TB |  Antec VP-450 | CM TX3 | W7 x64

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Legacy mode instead of UEFI.

I don't think there is a Legacy option and even if there is, why would it make any difference?

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dumb question, is the card installed correctly? what's the wattage on teh PSU? maybe its not getting enough juice to run it?

 

have faith, the LTT community rescued me about 2 hours ago when I was ripping my hair out over a GPU issue!

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It's installed properly. Like I mentioned I was able to boot into windows normally with the drivers installed on a another hard drive so I know the issue is windows/drivers related.

I've tried so many things that the windows installation is now causing me BSOD on anything I do even when I go in safe mode.

I'm going to backup the guys drive and format, I've wasted too much time, I usually don't give up but too bad.

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