GPU is Unknown Device

[Edgerunner]

I just had a new power supply and mobo put in my system.
The monitor is connected thru the GPU and the fan is running but seems to be going at full blast non-stop
For some reason the system will not recognize my GPU. It keep coming up in GPU-Z and Device Manager as Unknown Device, and my games will not run.

After looking around the pc I saw that my friend put in a 350w power supply. I had a 630w previously.
Is this the reason I can't get the PC to recognize it?

 

[kooks147]

I just had a new power supply and mobo put in my system.
The monitor is connected thru the GPU and the fan is running but seems to be going at full blast non-stop
For some reason the system will not recognize my GPU. It keep coming up in GPU-Z and Device Manager as Unknown Device, and my games will not run.

After looking around the pc I saw that my friend put in a 350w power supply. I had a 630w previously.
Is this the reason I can't get the PC to recognize it?

have you installed the drivers

 

[Edgerunner]

Step by step what I am trying to do.

Control panel-
went to remove previous update version but it's not there.
All that is there are two files. "Nvidia PhysX System Software 9.10.0514" .... "Nvidia Update 1.2.5"

Went to Start menu-
right clicked Computer- Manage- Device Manage
right clicked Unkonwn Device under Display adapters.
went to Drivers tab and uninstalled

Restarted in Safe Mode-
went to Computer- C Drrive and removed Nvidia Cooperation from Program files and Program files(x86)
Ran Drive Sweeper and selected everything Nvidia Except Chipset and cleaned it out twice.

Restarted in Safe Mode-
went to downloads and clicked on my driver update 327.33 ran it.
Failed less than 15% in

I'm getting really wired out about this and I've been trying Anything I could find on the interwebs to download the driver and I may have messed it all up in the process.
Can't even download Nvidias geforce experience.

It's getting to the point where I want to drop Darik's Boot and Nuke and start all over from scratch.
Will this at least get me to a point where I can start over again with a fresh start with Nvidia as a whole.