Problem with my new 2.26 ghz P4 processor, running at 1.70ghz

[UFO2020]

Yesterday I bought a P4 2.26ghz processor, 533 FSB motherboard (Chipset 850E Intel) and 512MB of PC-1066 RDRAM (two 256mb cards). I put a new computer together with it, but the processor is only running at 1700mhz. The CPU/PCI Frequency setting on the motherboard and bios is 100/33, but it should be at 133/33 to run at 2266mhz. Whenever I set it to 133/33, Windows doesn't load and says there's an NDIS error, and something about a protection fault (I reformatted the hard drive and reinstalled Win98...same thing). When I turn off the computer and back on again, there's no video, and on the next boot the bios runs a safe mode thing and says the CPU settings are incorrect. The three options are Manual, 1700mhz and 2266mhz. Selecting the latter two adjusts the CPU/PCI Frequency setting accordingly; 100/33 and 133/33. With 1700mhz everything works correctly. The 2266mhz setting should work, because that's what the processor is! The ram is in correctly, and I even tried switching it around. There needs to be two blank ram cards in there too according to the motherboard instructions, which is what I have in there. The CPU is installed correctly with large heatsink/fan. I have a 400W power supply. What could be the problem?

 

[DaiShan]

There are a lot of things that could go wrong, the first thing I would try would be to clear your cmos. Also a windows protection error on boot means that a 32 bit device driver could not be loaded, so if clearing the BIOS doesn't work come back and post, and I will give you more things to try (there is a bunch which I would rather not type out if it is something as simple as clearing the cmos)

 

[MazerRackham]

You might also want to check for a BIOS update for your mobo.... that might help.

 

[FluxCapacitor]

I agree with DaiShan. It's also not necessarily your CPU causing the problem. It could be your RAM, heatsink incorrectly installed or fan not working, power issues, or more. Your motherboard is defaulting to 100/33 because of the BIOS failing to complete a POST.