Hi
Thank you.
After an expensive replacement battery also, apparently, failed I went online to find if others had the same problem, and discovered this forum. I followed the guidance at the link below and the troublesome Acer Aspire one (AOA 150) is now working again, powered by its fully charged battery:
http://acer.custhelp.com/app/answers/detail/a_id/3288
There was a worrying moment when the netbook appeared completely dead before bursting into life again. This is the line in the instructions that reads "Let the unit run and after approximately 1 to 7 minutes, the unit should reboot and the BIOS will be updated". I used a USB flash drive (in other words a USB stick) as instructed. I could not make sense of the instructions to do without a USB stick and clic (sic) on InsydeFlash - I never came across this option.
All the best
Lawyer