WiFi card is under keyboard but you have to propably also remove upper assy. I recommend to you visit Fujitsu Service Partner

Sorry but replacing GFX is not possible.

and what is your problem with notebook exactly?

Hi,
local service partner should be able to flash SSD firmware, which may solve this problem.

Hi,
it's in front lcd frame. Left down corner from front view of lcd.

Attached img of frame from behind with magnetic switch.