Vaio Notebook Battery Charging

[davidwoliver]

Hi,
My Vaio FX503 has stopped charging its battery! It recognises when the battery is inserted or taken out, but does not increase the charge which is stuck at 75%. The battery is new and OEM. I am running XP Pro Sp2, and power drivers appear up to date. I have tried deleting them and they automatically re-install as they should, so these seem ok. No error messages etc.
Any ideas anyone? (MS themselves do not have any ideas)
Regards,
David

[kee-lo_]

Sounds very strange, but I remember someone saying the power gage stops after 75%. After about 15mins it says 100% charged.

Hopefully someone can confirm this.