WSOD (White Screen on Boot) - Laptop

August 24, 2009 at 09:10:37
Specs: Windows 7, AMD Sempron 3500+/4GB Ram
Hi guys.

I would greatly appreciate your views here please.

My Laptop (after I took it to bits and cleared out lots of dust from the side fan as it was over-heating badly), has developed an error.

Now before this happened, the laptop fan stopped spinning yesterday and it got incredibly hot, I thus took it to bits and guessed it was due to the dust 'jamming' the fan. I now doubt this, and think it was an electrical fault as the fan randomly kept turning on and off, and kept turned off once it booted up - thus over heating it again!

Suffice to say I took it to bits once more, had a poke around and re-assembled it.

*The problem*

When I boot up, (the screen powers on ok), I am presented with a WHITE SCREEN, and no BIOS. I cannot enter the BIOS by pressing F8 either.

N:B If I remove the hard disk from the laptop and boot the laptop up - I get the same white screen - as if the hard disk is installed.

So once installed, the hard disk lights flash and you can hear it booting up. To confirm this I have connected this Laptop from the VGA out port to my home PLASMA screen and the Laptop works ok, (and doesn't overheat any more either) and it goes to the Windows 7 log-in screen.

However (oddly?), if I open the screen the VGA out port tuns off and I am left just with the whited out Laptop LCD. This rather defeats the object of being able to connect to an external VGA if one cannot use the keyboard!? Any how....

So...my questionable engineering skills have lead me to believe I have accidently broken something inside the laptop. :(

I have removed the keyboard and checked the cable from the screen to the motherboard is firmly connected onto a white socket - and it is. None of the cables appear severed either, oddly. There are no 'dead pixels' on the Laptop screen - simply a white (off white/greyish) lit up screen.

So please, I ask you oracles out there - if a screen is like this but still powers on, does this mean it is broken beyond repair?

If the PC works fine on an external VGA - does this confirm the graphics card is also ok on my 'broken' Laptop?

I have found a replacement LCD screen but I am somewhat cautious in how to fit this.

The advert I found on Ebay states: ''No Backlight Inverter Board''. Can I simply swap my old 'inverter' to my new screen?!

Thank you for any input, I am grateful for this opportuning and your insight.
Yours Faithfully
Ben.


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#1
August 24, 2009 at 13:13:21
Laptop make and model?

WinXp Amd 64 3000 Msi Neo2 Platinuim 1 gig ddr 400. When we cast a pebble into a pond we should look past the first ripple.


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#2
August 24, 2009 at 15:28:40
Hi. :)

Sorry, it's an HP Compaq NX6325.


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#3
August 24, 2009 at 16:57:52
This post is more appropriate for the hardware forum. Anyhow, you are right in your thinking that you might have dislodged the video cable that goes to the notebook's LCD when you went about cleaning out the laptop's fan.

You need to go back in there; disconnect & reconnect the cable or nudge it back in place, it's probably loose.

Windows 7 News!


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#4
August 24, 2009 at 17:46:34
"If the PC works fine on an external VGA - does this confirm the graphics card is also ok on my 'broken' Laptop?"

No, only that part of it works.

Playing to the angels
Les Paul (1915-2009)


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