Motherboard detecting 1/2 processors

[Benedoge]

Hi There, 

I recently got an old Intel palr s5000 motherboard. 

My plan was to use it as the platform for my next gaming PC. ( I know servers are loud and so on.  And there are no affordable e atx cases , so I build one by myself. ) 

 

The system so far consists of : 

Intel s5000 pal, 16 gb ram , 2x Intel Xeon L5420 

 

The problem I have is the following . 

When I am in the server's BIOS , it says that it has only detected one of two processors. How can that be the case ? I mean I installed 2 xeons on the motherboard . 

[Electronics Wizardy]

Does it still say one if you swap there ports?

[Benedoge]

29 minutes ago, CUDA_Cores said:

do you have both EPS power connectors plugged in?

No I haven't . My power supply has only one 4 pin connector . I can't afford a better PSU yet. 

 

[Benedoge]

28 minutes ago, CUDA_Cores said:

Also try swapping the CPUs. One may be dead. Its rare, but it happens.

I have done that several times . Both CPUs are happily working

[Benedoge]

56 minutes ago, CUDA_Cores said:

we'll, theres your problem. One of your CPUs is starved of power. That's why it is not working. You need to get a better PSU.

OK thank you for your help