MacPro 3,1 (08) resetting when bumped

[longmover]

I've had this issue for quite a while now, I've tried searching and found lots of others having the same issue but no resolution.

I figure it's a loose connection somewhere but I've stripped the thing down, unplugged everything except the CPUs, air-blasted everything and re-assembled but with no joy.

It only needs a gentle nudge and it goes, it's quite frustrating, especially with a 3 year old running around and bumping my desk at inopportune moments!

Has anyone else had/solved this issue?

[seclusion]

I did have the same issue when I moved
Fortunately I pulled the video and Ram risers out.
Blew them off, put them back in and for me, all is well.
Can u put the case somewhere it can't be bumped?