Help! Swap Processors, does not boot

Hi everyone,

I have a problem here. I'm trying to replace my P4 3GHz HT processor (which I suspect has some problem, but still boot), but everytime I replace it with a 1.5GHz processor, it doesn't boot. The computer starts up like normal in which the fan is running, the cd rom spins, but the monitor's power light just beep on and off, and no keyboard light...

I'm quite sure that the used 1.5GHz is fine, though I never see it run cause I purchased it from Ebay seller. 2 processors from 2 different seller. I've checked that both are 478, same as mine

Is there anything I should alter in BIOS or anywhere when I need to change processor?


Thanks



MB: 865GBF
CPU: 3GHz HT processor, not overclocked, but ever overheated accidentally
VGA: Elsa 980 FX
HDD: 80G SATA

I think the processor is like 2 years or so. It overheated like twice back in summer, and it shutted down itself. It leds me to purchased another fan, and now, the processors to replace since it crashes.

I'm not sure its memory problem, since I can still use my previous processor, but not the other 2. While, if it is memory problem, all the processor won't run, right?

Thanks for the answer...

Hi there,

just a bit more information:

MOTHERBOARD
Product name Intel(R) Desktop Board D865GBF based system
Board model Genuine Intel(R) D865GBF system board

PROCESSOR
Processor Intel(R) Pentium(R) 4 CPU 3.00GHz
Bus speed 800 MHz
L1 cache Data Cache 16KB, Execution Trace Cache 12K Micro-ops
L2 cache Advanced Transfer Cache 1024 KB
Form factor Socket 478
Stepping 3


About your questions, I think the Bus Speed is 800 MHz, while the 1.5G one has 400 MHz advertised... How do I set it? I tried resetting BIOS jumper, same result. I cant change anything either in BIOS, such as speed, cause it is greyed out.

Thanks for the reply

would be easist to just clear the cmos. and no bother with swiching cpu's back and forth. Also if you hold down delet and Insert prior to power on your computer it should se your fsb o the lowest seting. repeat this several times. if that does not work then i would try to clear he cmos.

EDIT: disregard. I found an intel document that clearly states that board supports a 400mhz FSB. It doesn't speak of specific processor model support though.

According to this here article (and many others), that board will not support a 400mhz FSB. That's your problem. Additionally the board will only accept 1.7Ghz-3Ghz P4's. Doesn't do 1.5Ghz apparently.

http://www.hothardware.com/viewart [...] 09&catid=3