Can MacBook Pro boot with touchpad cable disconnected from mainboard?

Hi,

i problably damaged the touchpad cable when i've cleaned the touchpad.

now the macbook pro does not boot . no chime sound. black screen. only white LED on... mainboard fan turns ok.

if i disconnect the flex cable the fan turns at the maximum speed.

DO YOU KNOW IF MACBOOK CAN BOOT WHEN THIS CABLE IS DISCONNECTED

or it's a logic board problem?

thank you guys

cheers