Asus G70 8700m GT Replacement
Its possible to fix it. If you would like to be fixed you can contact us. All what we do is that we replace the chip for new models ( Data Code 2009 / 2010 / 2011 ) which ones have the " new bumpers " between the IC Chip and the pcb base of the chip. Also we use a leaded solder balls which do not oxidate , so your graphic card won't get break anymore. As a proof of replacement we give back the old chip.
About of the card replacement.
As long as it is MXM II slot card, you might try to swap it for different one. Before you will do it, all you have to do is to make sure the graphic card BIOS is on the pcb itself, and its not shared with motherboard bios. Also when you will be looking for different card, you have to make sure that the cooling system will fit and either bios is located on pcb of graphic card. I suggest that you should be looking for same model, but if its used not brand-new one it may fail again in short time.