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Question about Compaq Presario 1700 Notebook

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Wont boot no BIOS and oly a white screen

Hi, I just bought myself a Compaq Presario with a cracked screen and no power adaptor. I purchased a screen and replaced it. I tried a 9v adaptor to see if I could getanything from it but no luck. I finally got my19v adaptor and turned on the laptop, only to be faced witha white screen. The laptop wont show anything else, no BIOS or anything, I dont hear any beeps, wont switch to an external monitor when i plug one in, DVD drive will spin and seems like is trying to load when I put a live CD in, have changed processor, same problems with battery in and out - battery doesnt seem to charge as can only power on with cable. Im stumped, but have a feeling the motherboard is scrap - please dnt let this be lol. Any help would be muchos greatful ! Thanks Keith

Posted by Keith Patton on

  • Keith Patton Dec 19, 2006

    ** Update to the weirdness **

    Have screwed down the heatsink and fan, now the laptop wont display a white screen - it stays black (unpowered). So screwed tight - black / unscrewed resting on processor - white ??

    Have just tried an Ubuntu Live CD, which seems like it is actually booting (with a Hard drive in the laptop), because the laptop isnt restarting and seems like it is runnning - though still only black screen. I have also just inserted a HDD from another old laptop and it does not seem to spin or anything.

    Im going to try a different inverter for the screen, will report back.

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Typically I have found that it is a connector that is the problem. You're getting power (lights the screen) but you aren't getting a digital signal (Screen Memory Map & Desktop). Check the mylar ribbon cable on the left, that is going under the hinge. Upon close inspection I found mine had cracked connections. A quick dab of solder corrected it. Not allowing the iron to rest on the mylar long. If you have one of the older models, and using a pin connector, check the leads, and make sure it is seated correctly.

Posted on Dec 23, 2006

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