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what happen about P4 to new motherboard

By JayPeeBee ·
I installed new motherboard (working),plugged to the source power supply. Putted my P4 on the socket, plug the fan (working), putted memory, putted video card (no recognition from the motherboard), plugged the hard disk (from the power supply and turning) but if I plug the strap to the motherboard it stop to turning. Same to the cdrom. All jumper from Hard disk and cdrom adjusted. Clear the bios (pin 2 and 3)on board, jumper relocated to pin 1 and 2 after 10 seconds.
No other signals, except the led on my new motherborad (meanning board get current). May I suppose my P4 processor not good anymore ... Or i forget to put somethings ... Oh last thing, I made the test with 2 differents video card and 2 diff?rent monitor but same result ! thanks

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by wcp In reply to what happen about P4 to n ...

A few things to try

1. Make sure 4-pin power connector from the power supply is plugged to the motherboard. Sometimes this is overlooked.
2. Make sure the CPU (and fan) and RAM(s) are seated firmly. This is no brainer.
3. Disconnect the power and IDE cables to the HD and CD-ROM. The cables might have been installed backward. HD or CD-ROM might be dragging the power supply.
4. Disconnect the USB (or Firewire) connector, if applicable, to the motherboard. If those are plugged incorrectly, sometimes they cause problems.


You said if you plug the strap it stops turning. Can you be more specific of strap? What is it that stops turning? Before this, did the computer showe POST?

Please add comment. Need more info.

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by csmith In reply to what happen about P4 to n ...

I assume by the word "strap" you mean cable.

There is nothing wrong with the CPU.
There is nothing wrong with any of the other components that you have used in other PCs.
Do NOT test components by plugging them in, or unplugging them, with the power supply on.
They can be damaged by this.
If the components run by themselves, but when they are all plugged in, then the fans do not turn, the power supply is too small, or the overload protector in the power supply is defective.
Regards, Chris

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