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Black screen at startup - laptop


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#1 mhal

mhal

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Posted 06 January 2016 - 09:22 PM

Hi, this is my first post.  :)

 

Replaced power plug on an old compaq laptop nx7000, and resoldered bios battery cradle onto motherboard.

 

When  pressing the laptop's power button, the power button's green light tuns on, and on the front of the laptop the green power indicator light, the orange charging indicator light and blue wireless indicator light all shine.

 

The cpu fan spins for around 2 seconds and then stops. The laptop dvd drive spins up. The hard drive doesn't seem to be activated. The screen is black and remains black. Nothing happens hereafter.

 

The laptop has 2 GB ram (2 x 1GB). I have tried different ram stick combinations and placements of the ram  to rule out bad ram. Same result as above: Black screen etc.
 

I have tried booting up without ram. Same result as above: Black screen etc.

 

I have tried booting up without hard drive. Same result as above: Black screen etc.

 

I have tried booting up without hard drive, battery, ram. Same result as above: Black screen etc.

 

Any ideas?

 

Warm regards, and a happy new years! :wizard:

 

Marty

 

P.s. Laptop would boot perfectly into Windows before abovementioned procedure, but had problems with the power plug and the BIOS battery cradle. :/



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