Laptop screen remains black and fan runs at full speed
Problem description:
When the laptop is turned on, the screen remains completely black/blank and the cooling fan starts running at full speed. The fan runs at unusually high RPM until you power down the laptop.
Possible cause:
Motherboard failure.
Possible troubleshooting steps and repair solution:
Most likley this problem is related to the motherboard failure and the motherboard has to be replaced.
Reader's Comments
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When the laptop is turned on, the screen remains completely black/blank and the cooling fan not working.
dell xps m1210
rashed,
Did you have a chance to test the laptop with an external monitor attached to the VGA port? Can you get video on the external monitor?
First of all, I would check memory modules. It’s possible that one of the modules failed.
1. Try reconnecting memory modules. Remove them from the motherboard and install back in.
2. Test your laptop with each module installed separately. If one of them is faulty, the laptop will start when the bad module is removed.
hey i use a hp dv2703tx laptop.i had blue screen of death problem and it was showing message display driver not working message and rebooted..and then same problem persisted..then i uninstalled windows vista and installed windows 7…bt now the problem is that i get discolorations on the screen with various line color patterns..till recently i had this problem..but then i tried reinstaling windows 7..the installation didnt happen successfully and now i have a laptop with no display…bt it powers up as i see bright screen when plugged in..please help me resolve this..
shripati,
Most likely this is a known VGA chip failure. This is a common problem with HP Pavilion dv2000/dv6000/dv9000 series laptops. HP knows about this failure and there is a chance you can get a free repair from HP, if your laptop qualifies. Take a look at this page:
http://www.insidemylaptop.com/free-repair-hp-pavilion-compaq-presario-laptops-out-of-warranty/
Call HP and find out if your laptop qualifies for a free repair. If not, you’ll have to replace the motherboard or try fixing the motherboard.
Recently I had a similar laptop Compaq Presario v6000 with the video chip failure. I baked the motherboard in the oven and it fixed the problem, at least for now.
http://www.laptoprepair101.com/laptop/2010/04/06/fixing-compaq-presario-v6000-motherboard-no-video-issue/
Proceed at your own risk. You can destroy the laptop if you decide to fix it yourself.
Hi,
I have a Toshiba M400 laptop with Ubuntu 10.4 installed. I had a problem about “blinking” and “fan runs at full speed”, but last week this situation had been occurring sometimes. However, now I couldn’t manage to boot.
I suppose that the existence of this problem is due to the broken anti shock sensor. So in order to solve (or probably solve booting problem), I need to know how to disable shock sensor from motherboard.
Thanks for your help.