Do you have a spare (or a friend with a compatible) AC Power Adapter or Battery?

 

You can rule out both if you have two known goods, which would point to the power control system on the main board. It could be the power supply, I have also had bad luck with a few supplies (on a precision system) and at times it recognized the power supply is invalid or unknown. 

I will see if I can try another battery and AC adapter

It seems like a lot of users with E1705's and 9400's are having battery/power problems just after a year

I am wondering if there is an issue with this model. 

 

I wish I knew that a larger majority have problems at a year 1/2 maybe I would have bought the 300 warranty. 

- Since the last post I have bought a new OEM AC adapter

 

- Ran a Dell diagnostic which instructed me to Flash the BIOS

 - It also gave me some other information

 

1) the led on the right hindge shows that the Battery in trickle charge mode

2) When I removed the battery and push the LED test button all the LED's light up and then go out No error lights from what I can tell

So when I attempt to flash the BIOS I would not get past a message that says "The AC adapter and battery must be plugged in before the system BIOS can be flashed"

AC is plugged in and the battery is in as well

I am given the option to press OK or cancel.  

 

If I press OK nothing happends and Cancel quits the BIOS update.

 

Also I can run the computer on complete AC power and I can run on the battery for a very short period (minutes or less) but the moment I unplug the AC power the LED for the battery lights up orange until I replug in the AC power

 

In the Control Panel - Power Options- Power Meter

It says under Power Status 

Current Power source: AC Power

Total battery power remaining: Unknown

 

If I check the box that says "Show details for each battery"

- it says #1 Not Present

 

Any help is greatly appreciated