On 13/03/2017 12:02 AM, Paul wrote:

1) Verify the PCI or PCI Express cards fit properly.
Plug a test card into Slot 1 and Slot 6 and check
for binding, or for the plugin card being bent or torqued
on insertion into its motherboard socket. You want
the cards to fit smoothly and not be under stress.
I had one computer case, where the alignment was
terrible!

2) The screws for the standoffs are generally dead center.
The position of the motherboard should not be allowed to
drift too far from dead center. Each screw thread in the
standoff, should be nicely centered in the mounting holes.
When you install a motherboard, you have to hold the
motherboard in place with one hand, while tightening the
screws with the other hand. The spring fingers near the
I/O plate area, tend to push the motherboard out of position.

If it's metal contact and short-circuit issues, the problem should have
happened days ago. It's really weird as the problem suddenly surfaced
just yesterday night.

I would try to reproduce the problem later.

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