I have a non compete but it says it governed by the state of California is it an valid contact

The fact that its governed by California law and you're in Pennsylvania (I assume) does not necessarily affect its enforceability.  The law pertaining to non-compete agreements is complex and fact specific.  You should consult with a California lawyer and provide the detailed facts pertaining to your receipt, signing and timing of the agreement to get a better idea of whether its enforceable.  Even if an attorney tells you that its a weak agreement, you need to be prepared to deal with the consequences of acting against the non-compete and dealing with the employer trying to enforce the agreement.  Defending a lawsuit is very costly and time consuming.