Hello, I've got this Asus Sabertooth motherboard which has got the 1st pci-e slot not working. All 3 others work just fine in their respective x8,x16 modes. I measured 12v and 3.3v, clock, the capacitors on each lane, everything's in check. I resoldered the small part of the slot where the input voltages are but still no success. Any idea what could I check next?