yea, if u ask me, hp is startin to go emachines on us, unfortunatly...i had a hp, same prob, mobo died(but that was a cognac XL and cant find crap for it neways) but the ps was brand new, and any ps i put in it, got fried, so i looked closer at the mobo, and whatcha know, the capacitors were about to burst. so open up the case and take a nice long close look at the capacitor caps, if they not flat, then u need a new ps, new mobo, and hopefully not a new processor. if u were to upgrade(not to push ya or nething) id suggest to go for some of those conroes, or an x2 4400+
OOH! just remembered. u said the monitor went ape*#$!, so its gotta be the mobo, cause if i remember right, hp r cheapasses, so they like onboard video...gotta be a cap blown on the mobo, a major surge prob came into the ps, and fried somethin or another on the mobo....