Can I use a desktop computer without a PSU?

[mrfreebean45]

Well I just got a Dell Inspiron 3847, and I first started it up without a PSU, and it worked fine. But I'm wondering if using a desktop without a PSU is actually bad or not.

 

[IntelTurtleFan]

A PSU is what powers the computer it must have had one to turn on.
The PSU is where you plug it into the wall at.

 

[USAFRet]

Well I just got a Dell Inspiron 3847, and I first started it up without a PSU, and it worked fine. But I'm wondering if using a desktop without a PSU is actually bad or not.

It can't do that.
That's like buying a car without an engine. Does it start? No.

 

[MarkW]

Thats like sitting down to eat dinner, and there is no food to eat.