Question about Dell Latitude P4 C640 Business Laptop (C640251240CDRWDVD) PC Notebook
The unit works perfect with only ONE source of power.
if ac adapter is plug batt needs to be out or will never start.
if batt is inn ac power must be out or will never start. and if you have any of them working and plug the other, the unit will shut down right away.
so there is no way to charge the batt. I know batt is ok. cause I tested in another c640 with out any problem, same for the ac adaptor. I have use pa6 and pa9 and is all the same.
is anyone familiar with this failure? pls help
Just log on to support.dell.com
click on drivers and download
punchin your system's servica tag
download BIOS updates
but it will only be done if ac adapter and battery are both connected if its not
than it could be an issue with the systemboard and will be replaced if you live in US call 1-800-624-9896(DELL)
Posted on Jun 05, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Mar 01, 2014 | Acer Aspire 7720 Notebook
This is only the first of many things you may need to do to determine the fault. But it is a process for determining the exact cause.
Make sure the ac adapter is correctly plugged into the notebook and into the power cord.
everything is plugged in correctly and it still will not power on,
follow these steps to complete a 'power reset' of the notebook.
May 15, 2011 | Acer Aspire 5500 5570-2609 Laptop
Mar 01, 2011 | HP Pavilion zd7000 zx5000 zv5000 presario...
Aug 16, 2010 | HP Compaq 6735s Notebook
Apr 06, 2010 | Sony Cyber-shot DSC-H9 Digital Camera
Oct 12, 2009 | Dell Latitude D610 Notebook
Sep 24, 2009 | Dell Inspiron 1300 Notebook
Jun 14, 2009 | Acer Aspire One PC Notebook
Jun 01, 2009 | HP iPAQ RX3115 Pocket PC
Mar 20, 2009 | HP Pavilion ze4365us Notebook
Apr 28, 2017 | AVG Computers & Internet
Apr 28, 2017 | The Computers & Internet
82 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: