How can i fix this problem in my mac?

Question

i was working on my mac plugging it without the battery

& accidently it was unplugged and now its not working

when i open it it hangs & it flashes with a pic of a folder & question mark

help me plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Answer 1

i think it lost the os, use the restore discs to repair, but it may cause u to lose files, use ubuntu .iso, ill send u links if u wish, and details

Answer 2

insert your OS X dvd, see if it boots.

Also click on the blue  in the top left corner the click on Software Updates it will get everything you need and install it

that should fix it

good luck