My book world fail- wont power on/off 1/3 light on no connectton

ok so i got this about 2 ears ago and after a short time it stopped connecting

i was in my final year of uni so didnt spend much time trying to fix it

i picked it u the other day, turned it on, reset it, and viola! all my stuf from uni was there

but now, 2 days later, it isnt woring again…

i dont want to wait another 2 years till it desides to work, and i have stuff i need to recover on here

short of breaking it open and sticking the hds into my computer, what should i do?

there is nothing being detected when attatching usb or ether

but the power button isnt turning it on/off it is constantly sitting with 1/3 of the light on

any suggestions? or should i return it under its 3 year warranty b4 it runs out?