Hi all, I have a Compaq Presario 1200-XL-110 laptop which I am having a little trouble with. In that it will not power up at all, the battery is flat and won't charge. I have had the power supply tested and it delivers what it says on the bottom of the PSU adaptor, also the light on the front of the laptop to indicate that power is getting to the laptop is on, however the battery charging light dosen't work and I cannot boot up at all. Someone said that it might be the power converter board in the laptop, however I have bought a new one and replaced it and it still doesn't start. I hope that someone can help. Or if you have any other ideas then please let me know. Nish P.S. I had a thought that it might be the battery because when it did work if the battery was out of the laptop then it wouldn't boot up either. Now I don't want to buy a battery unless I really need to.