Here's a good one - laptop won't boot but LED is on?

[Yajirobe]

Hey guys.

So I have a Sony VAIO PCG-61611L laptop here that won't boot.

Symptoms:
- Press the power button, there's a small sound, like something inside is turning on, it sounds completely normal (not clicking or anything like that).
- The green LED on the power button stays on, meaning the laptop is on and running.
- Keeping a hand near the vent, the laptop starts to blow out hot air unusually fast. Not extremely hot, but for the first 20 seconds of booting (well, non-booting) it's warm enough to notice.
- The screen stays black, nothing at all through the entire process.
- No Windows sounds either, so it seems the screen may be fine, the laptop just isn't actually booting.

The past few weeks, the laptop has not been going to sleep properly (not all the time, but frequently enough). The power button would be pressed (to put it to sleep) and the screen would go black, but the LED would stay green (not turn orange) and the fan would keep blowing out hot air, forcing a hard shutdown by holding the power button (as the computer would become unresponsive).

I'm not saying that has to do with anything, but I find I feel it worth noting.

Plugging in the laptop produces the small orange light indicating it's charging. Took out the battery, held the power button down for 30 seconds (read that somewhere) - did nothing. Tried turning it on with and without the battery - nothing.

I'm kind of out of ideas. Anyone have anything?

Thanks for anything!

 

[vinaya bhargava]

I've had a Sony E series laptop, when i turned it on then there is black screen (off black color) only power light is powered up and fan is working, no HDD light is powered up. In short, there is no POST. I can assure that there is no problem in motherboard as 2 or 3 out of 50 times system boots and POSTs successfully. Possible causes and solutions?

Thanks in advance

 

[wayu takemura]

Thanks for the reply, but I don't think that'd work for two reasons. Firstly, like I said, no Windows sounds or anything, the computer just isn't turning on, not just the screen. Secondly, to connect to a second display, I need to enable it through Window's control panel or something.

For me i did it (window 7 compaq) it was good last time i didnt know and i changed innocence mainboard chip
my symptoms is the same i seet it to sleep and everything else was same as you i didn't test if you have to plug it in everytime you turn it on or not just dont set it to sleep (ever)

 

[wayu takemura]

i acually have cooling pad and i have my fan blowing at 3rd power all day it broke yesterday i used vga cord and it just fixed itself