M1330 powers off in one second

Hi everyone!

I have a Dell m1330 XPS laptop that was working fine until recently when it just went completely dead. After reading about it on the net I started replacing things in my system. I started out with replacing the power jack on the motherboard, then the battery charger / USB board, and now the entire motherboard. None of these things have made any difference.

The symptom I am seeing now is that when I push the power button the power LED lights up, and then after a second or so the system turns off. During this time the hard drive spins up but the CPU fan doesn't. The screen does not show anything.

The problem occurs when I am using the power adapter (with or without the battery) or when running just on battery.

I have tried different battery, different power adapters, different RAM as well. I also have tried to boot up just the board without anything connected to it (keyboard, DVD, screen, etc.).

The only thing I haven't tried is a different CPU. I don't have an extra one of those to try.

So before I spend some more money on this laptop, I thought I'd ask here in case someone has any suggestions for me.

I appreciate your reply.

I don't know this model specifically, but if the CPU fan isn't spinning the system should shut down to protect the CPU from overheating. That's why it's shutting off right away. You can get the fan itself for around $13 + shipping on Ebay or with the whole heatsink assembly for $25-30