BIOS not recognizing the CPU

I have changed my P4 from a 2.8G to a 3.4G. When the computer restarts, it says
"Alert! The processor is not supported on this system, and will run at a reduced speed."
The computer runs better than before with the L2 cache now being doubled I would guess.
It still does not recognize the CPU as 3.4G. It thinks it is 2.8G. Here is the info on my system.
I have CPUID, Everest and Belarc for any other information that is needed.
Just let me know.

Thank you for your time in helping me with this.


Operating System System Model
Windows XP Professional Service Pack 3 (build 2600) Dell Computer Corporation Dimension 8300
System Service Tag: DRXXV21 (support for this PC)
Chassis Serial Number: DRXXV21
Enclosure Type: Mini-Tower
Processor a Main Circuit Board b
2.80 gigahertz Intel Pentium 4
16 kilobyte primary memory cache
1024 kilobyte secondary memory cache Board: Dell Computer Corp. 0G0728
Serial Number: ..CN4811135300PZ.
Bus Clock: 800 megahertz
BIOS: Dell Computer Corporation A07 09/27/2004
Drives Memory Modules c,d
400.09 Gigabytes Usable Hard Drive Capacity
324.32 Gigabytes Hard Drive Free Space

_NEC DVD+RW ND-1100A [CD-ROM drive]
HL-DT-ST DVD-RAM GH20LP20 [CD-ROM drive]
3.5" format removeable media [Floppy drive]

Apple iPod USB Device [Hard drive] (987 MB) – drive 2
ST3200822A [Hard drive] (200.05 GB) – drive 1, s/n 3LJ3BBQG, rev 3.01, SMART Status: Healthy
ST3200822A [Hard drive] (200.05 GB) – drive 0, s/n 3LJ0XYR1, rev 3.01, SMART Status: Healthy 3328 Megabytes Installed Memory

Slot 'CHANNEL A DIMM 0' has 1024 MB
Slot 'CHANNEL B DIMM 0' has 1024 MB
Slot 'CHANNEL A DIMM 1' has 1024 MB
Slot 'CHANNEL B DIMM 1' has 1024 MB
Local Drive Volumes


c: (NTFS on drive 0) 200.05 GB 125.54 GB free
d: (NTFS on drive 1) 200.05 GB 198.79 GB free

You have pretty much received all the information you need to receive:

"Alert! The processor is not supported on this system, and will run at a reduced speed."

Your motherboard either will not support this processor, or you need a flash BIOS update. The flash BIOS update can be downloaded and installed from the manufacturer's website. If you install it incorrectly you may render your system completely useless. Please read the directions carefully.

For future reference, not all parts are supported by all motherboards. Before investing the money into upgrading make sure your current architecture supports what you are trying to plug into it. You may need to replace the motherboard to receive full benefits from this CPU.

I have the most up to date BIOS for this Motherboard. So I am probably SOL… Thanks for looking