Laptop Turns On When I Pressed The Power Button But Shuts Off Immediatly After A Few Seconds

[christopher14]

I wanna to use my laptop and I pressed the power button to turn it on,then it powered on and then after about 10-15 seconds it shuts down back...what should I do? Do you have any idea why does this happen?

[savvy2]

Pavilion dm4, win7-64

ok,  take out the battery , what does it do now.

step1 complete. have 10 more, .+

during 10 seconds can you enter the BIOS screens with F1, F9/F10 or ESC key or as your opr manual directs.

yes/no.

what full p/n not just DM4.  the full number matters.

this comment above assume power pack attached to PC and to wall with power there.

sure.

[christopher14]

It won't turn on when I take out the battery

yes I can enter the bios setup

it is LD901PA#UUF