Hello , i have carbon x1 gen 2 with i7. Basic i buy it from eBay but my fault i haven't read all information and see that the laptop is power on but without any display shows.... My technical department says that is wrong bios --> damaged system board. My P/N IS lmq-1 12298-2 48.4ly06.021 Anybody knows what to do what my laptop... I found other board same board from eBay but my question is near to fan cooler i see 2 input cables. 1 for fan cooler but the 2nd to my board (laptop) is empty i haven't any cable around that fits inside!! Anybody knows about ? Something else must know ?? Also in many treats i found problem around bios , is it true... Maybe the flashing bios work on my problem? And how to proceed with new one ... Thank all