It's odd there was not a jumper in the first place.
I suspect you could leave the jumper off, really (I've built many a rig with the jumper hanging off one pin), but some OEMs may take issue.
I've also moved away from using the jumper in the first place. Many mobos have reset switches these days, or I simply unplug, pop the battery and press the switch to discharge the caps.
Has the rig ever fired up in working condition?
Ah okay and yeah no the rig was a fresh build and it did nothing in the first place.Blank screen,No beeps.