Try these attempts, plug the MBP with MagSafe and power-on, let it powered for 15 minutes, don't power off, then try to press the keyboard CAPS LOCK and check if its led turns green example:
https://i.stack.imgur.com/KChS4.jpg
if it turns green then maybe even on black screen your MBP is working in background and keyboard HID is responsive and so could be fixable from another Mac through an automatic prepared USB MacOS Installer (even a Lion one) with customized com.apple.Boot.plist I guess, or you can set a remote control through Ethernet cable from another Mac installing the proper apps on the same SSD you are swapping.
Or try if you have to use a thunderbolt adapter to an external display, maybe AMD/ATI GPU could wake up from there.
These to allowing you the set the nvram to use again the IntelHD3000 iGPU.