Ahh.. The good ol' days when Gigabyte made PSU's...
Nope I remember nothing!
Yes, get a new PSU, at least 500w+ for future proofing. And not just any 500w PSU, you should get one that is well branded. My pick is Antec, Corsair, XfX,etc ( I forgot the other brands but someone will tell you, however, these are a personal favourite)