How to use intergrated gpu with normal gpu put in? help

[Alexplays]

I am trying to unbrick my hd 6950, because i tried to flash it to 6970.
Now i wanted to use the usb dos method to unbrick it. The usb isnt recognized, i think because it is some chinese usb 2gb.
How can i have the gpu put in the slot and running, but have the intergrated card display.

Another thing. My pc now is stuck at the windows logo and i'm screwed.
The f8 doesnt work. Startup menu doesnt work. It just says diagnosing your pc. What should i do? How can i explain this to my bro?
Shit.

The possible solution would be to get a new gpu and to install windows anew, which i dont want to do.

Is there a possible solution to this?

 

[CountMike]

Check your BIOS and ifthere's possibility to set IGPU as default output. Many systems turn IGPU off when a discrete GPU is inserted. If possible you can BOOT of IGPU and flash GPU BIOS like that. If not than it has to be done in some system that can.