Why won't my hp 533w computer support a processor upgrade? The original processor was a Intel Celeron than ran at 2.0 Ghz. The product documentation states that the best processor the mother board would support was an Intel Pentuim 4 that runs at 2.4 Ghz. The socket was a match. I also came across a Pentuim 4 that ran at 2.0 Ghz. So the 2.0 worked but the 2.4 didn't. I was gettiing a no signal message on the monitor. Could it have something to do with a video driver. The mother board has an integrated video card. Please help............