dell m5030 bios not recognising charger

December 8, 2012 at 02:29:11
Specs: Windows XP
my dell inspiron m5030 wont power up from the charger alone, and wont charge the battery. The same charger and battery work perfectly in a dell m5040. ive purchased a replacement dc jack input for the motherboard but cant melt the existing solder joints! my variable temp soldering iron can reach up to 480 degrees C - Any ideas?

Note: putting the charger and battery from the newish m5040 into the faulty m5030 has the exact same outcome and I cant flash the bios because it requires mains power!

I wanted to replace the dc jack input as a final elimination, if this still doesnt fix the problem i can only assume the communication chip on the motherboard is gone and hence will abandon as its not worthwhile replacing the mobo, however the laptop is working perfectly when i charge its battery up in my other laptop!

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December 8, 2012 at 06:39:23
The BIOS has nothing to do with it, it's a hardware problem.

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December 12, 2012 at 13:29:01
yeah ive since discovered it isnt a bios issue, flashing the bios is given as a solution on numerous forums. Given the fact I was unable to get heat dissipation through the multilayered dc jack input, i decided to apply a little fresh solder to the existing joints in order to eliminate potential dry joints. When i powered back up i got the message " the model number for the primary battery will prevent any battery present from charging - please insert a dell battery" prior to soldering i had never received any on screen messages in windows! this is a very common error message, I then held down the shift key and pressed f3 - bingo the laptop began charging, however a day later the message appeared again and the aforementioned fix has no effect! why a laptop would have a keyboard function to disable charging mystifies me, if you dont wanna charge, take the charger out!!! Ive spent alot of time attempting to fix this issue now, and whilst id happily break the laptop and sell its parts, its now become more of a challenge than anything else to get to the bottom of it!!! Im beginning to think its an intermittent fault on the communication chip on the MOBO, just a pity i wasnt able to replace the DC jack input. Back to square one again lol No thanks to dell!

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