Hi
Is the battery charged ? or does it charge?
Sometimes dead or dying batteries prevent laptop booting
Clearly with no battery you need mains power
Replacement battery's from chinese websites are very cheap but delivery times may be slow compared to those in your country
I would avoid any website which does not give the address of the company
( i have been looking for a HP laptop battery with prices from £12 to £30 + postage from chinese websites which use .co.uk website address )
Regards
Mike Barnes