First HP screen, then a black screen with a flashing underscore

Hello!

I bought a new graphics (Asus GeForce GT 740 PhysX CUDA 2 GB) card for my desktop PC (HP Pavilion p6-2067sc) and have a problem. When I put in the card and start the PC the HP screen sometimes maybe 20 seconds and after that it's a black screen with a line flashes in the upper left corner. Ive tried many things to fix it, but have not found ways again, I updated from the BIOS to the latest update from HP.

OK, I just found out that if I connect the vga input mother board and boot the pc, and after 5 minutes I plug the vga in the gfx card, it shows that windows started normally, and im on the desktop, I now try to install the drivers etc and see if that will fix it.

Tags: HP Desktops

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