Satellite L500d PSLT0A: wont work on battery power

Hi
I have Satellite L500d PSLT0A, with error 22% available (plugged in not charging).
Laptop wont work on battery alone
When ac adaptor unplugged laptop shuts down
Battery light is not on even when ac adaptor plugged in
Battery light comes on for a few seconds if you pull out ac adaptor plug and put it back in
_I have done the following_
1. Removed battery and AC plug and held power button for 20-30 sec and then replaced battery and ac adaptor
2. Uninstalled ACPI and re-installed it
3. Removed battery whilst still powered up and replaced after 3 min
4. System restore to out of box state
I have done the above several times, none of which work...any suggestions? BIOS update???
Cheers

Hi buddy,
For your notebook model there is a BIOS update available and can be downloaded. I found it on Australian website where your notebook model is listed:
http://www.mytoshiba.com.au > Support > Downloads
Computers > Satellite > L500D > PSLT0A-xxxxxx> (your OS)
Before you update the BIOS:
-Close all running programs
-Make sure you are logged in as Administrator
-Unzip all files
-Battery should be fully charged and AC/DC adapter must be connected

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