There is a button on the back near the USB connectors, this is called Back To BIOS, if you depress this it will light red when the computer is turned on and should get you back into the BIOS to make your setting changes.
The HD4000 will drive your monitor but only over the DisplayPort connection to another DisplayPort. If you only have DVI input to the monitor then an active DisplayPort to DVI adapter that supports dual link is required, these are quite expensive.
THANK YOU so much for the fast help. I did find on my own how to reset BIOS, but still no luck. I did not know that the button on the back to enter BIOS had to be pushed before boot up. Thanks for that tip. I did do that and DID finally get my monitor back up. Whew!
Interestingly all my "resetting" of the BIOS did nothing and my altered settings were still right there, which of course I switched back to factory settings immediately.
Now my computer is back thanks to YOU.
I am running my big monitor off the HDMI port with a generic HDMI to DVI-D convertor and max resolution allowed is 1680x1050.
Thanks for the tip about DisplayPort to dvi converter with dual link support. I never would have known.
Well now I have the new Graphics card, so I will try installing that again and hope windows will recognize it.
I will repost in a bit to say what my outcome is.
Thank you again Phil; I really thought I had screwed up big time.
I reinstalled the MSI R6850 graphics card and still no go. The fan is turning so power is connected. I have checked the insertion twice. But windows does not recognize the new addition and there is nothing in the device manager. Does this mean that I have a faulty Graphics card that needs to be returned?
Traveled back to Fry's and replaced the video card with the same model. Still powered with fan operable, but no video or recognition in device manager. Even tried second PCIe slot and still no go.
I will start a new thread asking about a possible BIOS glitch preventing recognition of the video card or possible faulty MoBo.