Problem with Upgraded System

[Deleted member 137626]

I just tried to do my first PC upgrade by buying a barebones kit. I basically built a new system with my original 7200 rpm hard drive, floppy, and CD writer.

When turning it on the only things that seem to power up are the psu and the cpu fan. None of my peripherals seem to be on. I know the psu is supplying power ok so it seems it's a problem further down the line with either the motherboard or the cpu.

One thing I noticed is when I plugged in both the 20 pin power connector and 4 pin power connector (for P4 cpu) the cpu fan would just rotate momentarily then stop. With the 4 pin connector disconnected the fan runs ok.

The motherboard is a Mach Speed Matrix P4M800 Socket 478, and the cpu is a Celeron 340 2.93Ghz 533FSB which I assume is a P4.

Thanks for any help.

 

[metallicafan]

So when you push the power button the PSU fans spins and the CPU fans spins but nothing else happens?

It sounds like your PSU has a 20 pin connection. Does your motherboard only have a 20 pin connection as well? You will have to have the 4pin 12V power connector pluged in.

What other components do you have plugged in? RAM, CD drives, video, etc?

 

[Deleted member 137626]

So when you push the power button the PSU fans spins and the CPU fans spins but nothing else happens?

That's correct

It sounds like your PSU has a 20 pin connection. Does your motherboard only have a 20 pin connection as well? You will have to have the 4pin 12V power connector pluged in.

My PSU has a 20 pin connector and a 4 pin 12V connector. When I first powered up I had both connected to the motherboard. The CPU fan only turned momentarily then cut off. Later I tried with the 4 pin connector disconnected and this time the PSU and CPU fans turned on ok.

What other components do you have plugged in? RAM, CD drives, video, etc?

RAM (1 x 512 Mb DDR)
Floppy Drive (from my old machine)
40 Gb HDD (Old. This is my master drive on primary IDE with old OS installed. I also removed the jumper restricting it to 30 Gb)
160 Gb HDD (New, slave on primary IDE)
DVD Burner (New, master on secondary IDE)
CD Burner (Old, slave on secondary IDE)
My understanding is that the motherboard has on-board video

Thanks