Question My PC freezes when there's a slight vibration on the table. PLEASE HELP!

[kgoutama.kg]

I have a 6 years old PC and this problem had been around for 4 or so years.
My pc specs:
Case: corsair carbide spec 04
Mobo: Asus B360F gaming
Cpu: intel i7 8700
Gpu: gtx 1080 ti
Ram: 16gb corsair vengeance rgb
Storage:
1tb seagate barracuda
1tb adata xpg gammix x70
500gb samsung 860 evo (boot drive)
PSU: corsair cx750m

The problem:
Everytime i do something in my desk that causes a vibration like putting a full water bottle too hard or banged the table by accident my pc would freeze. I brought it to a repair shop and they can't find anything wrong with it. I don't think any connection is loose because i've tried plugging and unplugging everything.

At first i though it may be my broken power button or something so i switched it with the reset button and it's still happening. I also tried wiggling/moving the gpu,hard disk, and cpu cooler but none of those cause the oc to freeze. My gpu have a bracket so it shouldn't be the sag.

What could be the cause? Any help is appreciated. 😭😭😭

 

[Lutfij]

PSU: corsair cx750m
Is this the green or grey labelled unit?

Everytime i do something in my desk that causes a vibration like putting a full water bottle too hard or banged the table by accident my pc would freeze.
Is your IEC cable on the back of your PSU, fully seated without any wiggling happening?

 

[kgoutama.kg]

PSU: corsair cx750m
Is this the green or grey labelled unit?

Everytime i do something in my desk that causes a vibration like putting a full water bottle too hard or banged the table by accident my pc would freeze.
Is your IEC cable on the back of your PSU, fully seated without any wiggling happening?

Gray label. The iec cable is not fully plugged in because it caps out and there's still some sticking out, but i think it's just how it is. The cable aren't loose that is for sure. Img