I purchased the fixit battery upgrade and went through the entire process to replace the battery. I thought it went well but once back together and turned on the keyboard is funky. It takes 3-4 presses of each key to register. The trackpad is completely unresponsive. Overall the machine is extremely slow now. I took it back apart and unseated/reseated every connection 3 times. (all the steps except removing the battery again).
It charges okay and the USB ports and wireless work. I am currently using an external keyboard and mouse.
I have also reset the PRAM. Not sure what else to do. What would affect both the trackpad and keyboard? Thanks. -Derryl