I have a HP Pavilion 4530.I upgraded my cpu from a 350 to a 500 mhz,but my bios wont detect that theres a 5oomhz cpu it says 350.And it wont let me MANUALLY change it.My bios is phoenix bios 4.0 release 6.0.3.Can anyone please help?Is that an authorized upgrade? Most Pavilions are not upgradable - they are what they are and they were designed to be that way.

It may be that there is a jumper on the motherboard, but I suspect not from my experience. You can upgrade RAM, hard drive, etc., but processors are a LITTLE different.

You may have to clear the BIOS, but I would wait until you are positive about upgrading the CPU!

i know how MUCH memory it can hold its max is 384mb.but i have a 500 mhz cpu in and it works fine,but its only saying it has 350mhz.i have flashed my bios and it still doesnt recognize 500mhz.i am trying to FIND out if there is a jumper or update or something i can do.cause it wont let me set it manually in the bios setup.Why don't you download BELARC advisor for free at www.belarc.com and see what your CPU speed is registered at?

When it boots, does it say 500 Mhz or you are just assuming that because it runs at all?

When I did a google search for that model processor I got lots of hits. (You can do it too!) One of them was to a roum where a person wrote:

Hey I had a HP Pavilion 4530 that I inherited from a family member many moons ago.

If I can remember correctly those HP's use two flavours of Intel CPU's a socket 370 and a Slot 1 type, both of which are extremely hard to get hold of. Those CPU's come at 333MHz all the way to 733MHz, but the Pavilion 4535 motherboard I think can only withstand an upgrade to a 466MHz CPU with a BUS speed of 66MHz. The mobos are designed so that you can't upgrade it a great deal.
Here is a link to that one site:

http://forums.sudhian.com/messageview.aspx?catid=18&threadid=83327&enterthread=yit says 350 in the bios and in system in windows.and its a socket 7 motherboard.Maybe that's all it can ever hope to be. You are lucky it is running at all with a non-supported processor. Do you still have the old one you can put back in? No sense in wasting an extra 150 Mhz.   yes,but i checked out my pavilion on hp's website and it says it can be upgraged to celeron 733mhz cpu.but i put the 500 back in my old computer and got it back going finally.Did you see the links I sent you about this Pavilion? Your chances of a functional processor upgrade were slim to none.

Maybe your other machine is a Pavilion also and I am reading this wrong?