Yes, that would work, per the suggestion
@bobesch offered.
iFixit is an excellent resource. I’m going to paste below two pics from their respective guides the things I would suggest to just leave disconnected for now, while you’re troubleshooting. (Neither being disconnected will make the boot-up issues any worse than what you already have.)
["How to disconnect the two flat cables in question for testing (iFixit)"]
Disconnecting the Airport/Bluetooth flat cable, Step 22:
When you get to Step 22 and you disconnect the cable from the Airport/Bluetooth card from the logic board, use the next guide to disconnect the PC Card cage from the logic board
View attachment 951460
PC Card cage replacement, Step 16
View attachment 951461
After you’ve disconnected those two flat cables, just leave them where they are, as-is, and reassemble the laptop. Once you’ve put it back together and you’ve got the keyboard reconnected, try powering it on again and hold down either the Opt key
or the T key
until the display shows up — hopefully in a shade of blue.
If you don’t get a blue screen of any kind and instead you get the same grey kernel panic screen, then the problem may be more involved. But I’m keeping my fingers crossed for you.