Alternator problem may be?

Symtom: My car stopped while driving. Battery has no power. The car starts again after boosted. Then it stopped again while the engine is running. Could someone please tell me what can be the cause?

Thanks a million

Sounds exactly like a blown alternator. It could also be that your battery is shot and can't hold a charge. Try charging it up one evening, then see if it still has enough charge to start in the morning. If it is still good, then dies while driving then your alternator cable could be loose or the alternator is just shot all together. If the battery goes dead overnight then it is just your battery that needs to be replaced (probably)