Question about Compaq Presario 1200XL104 Notebook

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Latitude C640 is dead!!

I went to turn on laptop while plugged in and absolutely nothing! The power supply light is green but thats it nothing lights up on laptop. Any help is apprecated. Elaine my compaq presairo wot power up,the lite comes on when plugged in ac. I check voitage output of adapter and is fine The switch seems to be ok But nothing works not even the fan The lite dosen't work on dc and the battery won't charge please help

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  • Anonymous Mar 25, 2014

    Asus Laptop

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The only solution that I can think of would be a power jack problem. I would not advise replacing the power jack yourself since you have to take out the laptop mother board, de-solder the power jack then solder the new one on and put it back together. My advice would be to take it to a professional computer repair shop and have them take a look at it and replace the power jack. It is worth getting repaired since power jacks usually range $40-$70.

Posted on Feb 21, 2008

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Dell latitude c640. turned on this morning and got the caps light to blink a few times and cd drive to power up then nothing. Just turned itslef off. Has been working fine until this.


several reasons why this will occur:

1) battery is not fully charged - you might try rebooting with the computer plugged into a wall socket.

2) computer's main power supply has been damaged and needs to be replaced.

3) virus - though with most standard virus' , you can still boot up, there are a nasty few that will wipe your entire computer including the operating system.

Mar 31, 2010 | Dell Latitude C640 Notebook

1 Answer

The power supply to my c640 has a green light that flashes when plugged into the laptop, if i unplug it from the laptop, the light stays steady and green, do i have aproblem, the laptop will not power up...


Is the battery charging when you plug the power supply? If not, while the battery and the power supply is plugged in go to BIOS, that will be F2 when your computer boots up, from there check on battery health or battery info you will also see the ac adapter if it's detected if it says unknown try to use another ac adapter if it is detected still try to use another adapter. If you still have the same problem after trying a new one. You'll need to replace the motherboard

Jan 31, 2010 | Dell Latitude C640 Notebook

2 Answers

My daughters power supply for her C640 has a pinch


I suggest you DONT USE PINCH POWER CORD FOR SAFETY.

PLEASE TELL ME IS YOUR POWER CORD & THE PINCHED CORD ARE SAME? I MEAN SAME MODEL? AFTER PLUGING OF YOUR CORD, THE BATTERY CHARGING LIGHTS ITS ON? IF NO THEN I GUESS THAT CABLE NOT SUPPORT HER LAPTOP.
VISIT A DELL SERVICE CENTER OR A SHOWROOM AND BUY NEW CORD WHICH IS MADE FOR YOUR DAUGHTER LAPTOP MODEL.
OTHER WISE SOME CHANCES OF SHORTCIRCUIT ON MOTHERBOARD.

Thanks, i am waiting for your feed back & if you satisfied then thumps me please.

Jan 31, 2010 | Dell Latitude C640 Notebook

2 Answers

Dead thinkpad by ibm


Hello,
The CMOS battery supplies energy to the Real Time Clock when the computer is not connected to the electrical socket, and does not have the battery inserted. It should not prevent the computer from starting up. You will however be asked to reset the time and date of the computer.
Hope it helps.

Oct 03, 2009 | IBM ThinkPad R50e Notebook

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My Dell Latitude C640 problem might need an electrician's opinion


The connector can be replaced, an electronic repairer can do this for you.

May 08, 2009 | Dell Latitude C640 Notebook

3 Answers

Dell c640 not charging battery


I have found a few things with this model, first if the laptop works on ac power when the battery is out then try pushing the button on the battery itself and see how many lights light up. If they are not green replace the battery it just wore out. Second if you can wiggle the power cord and you see the charge light flash on and off then the solder joints are cracked on the main board and you will have to take the main board out of the case and drill out the 3 rivets on the metal bracket covering the plug and bend it out of the way then there are a small brown and a small black block near the plug resolder the ends of these facing the plug. bend the bracket back into place and epoxy it where it was. put the main board back in the case hook all the stuff back up and now it will charge your battery. If you are not good at this stuff I would not try it yourself. I have fixed 2 c640s this way and it is slow careful work.

Jun 24, 2008 | Dell Latitude C640 Notebook

1 Answer

No power


check your power supply and make sure the proper power at the ends and the light is on the power supply, I no those C640 s have a problem with the darn plug in and the pins in the laptop may have got bend or broken check that out and if all the pins are not bent. your power supply may be bad check that out, if so you can go to Dellsupport.com and order one for fairly cheap. I think that will fix your problem.

Dec 21, 2007 | Dell Latitude C640 Notebook

1 Answer

Dell Latitude C640 Laptop


get to the main board of ur system there is a jumper near the battery .
change its position while power is off and get it back to its previous position. this way u will reset cmos to default.
if the computer starts hit delete to enter setup and load system defaults.save changes then exit.
ps: defected processor could be the cause

Nov 14, 2007 | Dell Latitude C640 Notebook

3 Answers

Latitude C640 is dead!!


Hi,

I have the exact same issue. It's not the processor. If you have you power supply tested, you will probably find that it's not working anymore. The green light still comes on when plugged in, but it's not sending the "charge" to the notebook.

I have this issue with a couple of C640's. I've tested the machine by charging the battery in another (Pentium 3 Dell C600), then putting it back into the broken machine... woohoo it works.

Unfortunately I can't figure out why the power supply's keep on busting, I don't think that the power-supplies are faulty, or maybe they just get old, don't know, but the most obvious problem is probably something with the mainboard, which really sux.

Hope this helps,

Oct 09, 2007 | Dell Latitude C640 Notebook

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