motherboard done?

ok recently on my pcg-grv550 sony viao stopped working, the power dc jack was loose so I took it apart to resolder it I've done this 3 times before. this time when I put it back together the screen didn't turn on but the computer did, everything was connected it didnt turn on niether did the viao seem to read the hd or the cd rom whenI put my xp cd in. i took it apart once more and now nothing works it just turns on the only thing it reads is the battery so is my motherboard done for or sounds like it can be fixed?

 

The motherboard is broken. Sorry.

 

you might have done some wrong soldering although how tht could be since you've done it before i dnt knw.. probably fried it sorry :cry