I have an MSI Z77a-GD65 and I need to short one of the slots to get it to work. The MB was working fine with 5 GPUs until a couple of weeks ago when one of the slots stopped working. I know it's the slot because when I plug this GPU and riser into another slot it works and when I plug another GPU and riser into this slot it doesn't work.
So, I see posts about presence shorting a 1x slot. I found a page here that provides description of pins for all slots (1x, 4x, 8x, 16x). http://pinouts.ru/Slots/pci_express_pinout.shtml
All slots except the 16x seems easy enough but the 16x has multiple presence detect, hot plug detect, hot plug present detect, etc pins. Any idea how to do a presence short?
I'm using a 1x to 16x powered riser.
Help will be truly appreciated.