My eee pc charger wont charge my laptop...

we had a similar problem the ac jack socket burnt out so we got a replacement part from ebay and my husband put it in and hey presto it works it cost 6 pounds for the part whereas a company to fix it wanted 100

Try taking out battery and plug in power. If it works, battery is faulty. If not,
Try taking out your hard disk plug in power, if it works, hard disk is faulty. If not,
Try taking out memory card, if there's a sound, memory card faulty. If no sound, it's your motherboard that is causing the error.

Note: If machine is under warranty no need to pay for the repairs.