Hi Donald!

   The system you have has a unique SeePU BIOS that reads "known" CPU's and sets up the motherboard accordingly.
   Officially a Celeron 500 PPGA is the fastest CPU supported...

 http://www.hp.com/cposupport/personal_computing/support_doc/bph05160.html

   But unofficially Intel books show this 440ZX/100 Chipset to go to x8 or a 533 PPGA and latest BIOS could run 800Mhz PIII. But no PPGA PIII were ever built, they were all FC-PGA. PowerLeap makes a piece that might be a work around.

http://www.powerleap.com/Products/neo.htm
https://www.quickbase.com/db/6v74ue7a?a=dr&r=cqw&z=me6w&rl=ctwu&rx=eu

Hope this helps...

Max


>Hi,
>    Does anyone know the maximum Celeron CPU an HP 4540 can handle?  Also, it is currently running 433, do I need to change the motherboard jumpers any?
>
>Thanks in Advance,
>Donald Gaither

--
10115 Mountain Flower Ct
Charlotte NC 28214-7638



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