Question Laptop turns on for a few seconds then turns of. No fan.

Jan 10, 2020
1
0
10
0
Hi,

I have an HP Envy 15m-bp011dx, and the motherboard model # is 924309-601. When attempting to power the unit on, while plugged in (charging led is on), with or without the battery, the power indicator led briefly turns on then off and the fan never spins and no screen is displayed. The charging led also turns off with the power indicator led. If I reconnect the ac adapter, the charging led does come back on.

I attempted a power reset, which did not solve the problem. The ac adapter is delivering 19.7v, and I did try a different hp adapter with no luck. The ene start-up chip is receiving 3.3v. When attempting to power on the motherboard, a burning smell is given, which seems to be near the cpu. The fan does work in a different laptop.

Any thoughts on what could be causing this? Could the motherboard not be supplying the fan enough power, which forces it to quickly turn off? Could it be a bad start-up chip? Or is there a partial short somewhere else on the board?

Thanks in advance for reading the long post :)
I have fixed a motherboard in the past with a bad capacitor that was easy to find, but this problem is a bit confusing.
 
Thread starter Similar threads Forum Replies Date
JamDoms Laptop Tech Support 2
K Laptop Tech Support 1
G Laptop Tech Support 13
P Laptop Tech Support 1
L Laptop Tech Support 1
B Laptop Tech Support 1
I Laptop Tech Support 1
R Laptop Tech Support 3
A Laptop Tech Support 1
R Laptop Tech Support 1
A Laptop Tech Support 1
O Laptop Tech Support 1
A Laptop Tech Support 3
B Laptop Tech Support 2
E Laptop Tech Support 1
M Laptop Tech Support 1
S Laptop Tech Support 3
M Laptop Tech Support 5
S Laptop Tech Support 3
L Laptop Tech Support 1
Similar threads
Question Asus laptop will only turn on for a second
"Second" monitor turns off when closing laptop lid
Water spilled on laptop. Laptop turns off after 10 seconds
Solved! Laptop not turning on, power LED on for 15 seconds - ASUS
My laptop turn on for a split second and immediately turn off
Solved! I just bought an Alien ware 13 R2 series laptop second hand, The laptop turns on fine but it won't progress past the setup scr
I was recording an audio on laptop but after seconds laptop turned off, and won't turn on.
Laptop not turning on, power LED on for 3 seconds
Laptop charging for a second then the orange light up and disappears and can't turn on.
I bought new Haier y11c laptop. When I turn it on, it automatically turns of after 30 seconds. It does not start for some time
My acer laptop cant turn on but the blue lights is turn on for a few seconds
my ASUS GL522V laptop not turning on. it seems to charge fine. but even when i press down the power button for up to 60 second
My laptop turns on then crashes after 30 seconds. Please help!
My Latitude E7440 Laptop will not power on, the battery wont charge neither the light will appear for a second than turn off.
Laptop won't turn on the second time
Laptop Fan Turn off after few seconds and isn't start at all
Laptop Lenovo G580 turns on for 2 seconds and off straight away
Toshiba Satellite Laptop won't turn on, Power Button LED Light Flashes for a second
laptop turns on and off in 4 seconds, does this for about 30 minutes before booting up
Asus r752s turns on and off automatically every seconds without even pressing the start button over and over

ASK THE COMMUNITY