WRT54G Router just keep on blinking

Hello,

I would like to ask help bout my linksys wireless router... It sudden keeps on blinking and I got disconnect on the internet... the problem with it is that I wasn't able to access my router becoz I cant have a stable ip address on my router going to my pc... the lights keepings on blinking sometimes all of them lights up even there is no computer conect to it... how do I fixed this kind of problem? I did ask for the assistance of linksys chat support and did what they say I should but it still doesnt work...