Plugged in computer, sparks went off in outlet, now 2 rooms are without electric
I have to agree that calling in an electrician is your best bet. The problem is most likely in the first dead receptacle or the last working one. The trick is knowing where to look and for what. I suspect a failed back-stab connection in a receptacle. 

There also me be other problems you can't see. Best to have it all looked over.