[linux-help] Re: hardware help Off Topic

[Jeff Vian <jvian10@xxxxxxxxxxx>]

You said you swapped DIMMs.

some trouble shooting tips would be:

1.  check and reseat the DIMMs, making sure they are fully latched into 
place.
(A DIMM that is not fully seated can cause this.  This includes making 
absolutely sure the dimm slot is clean)

2.  remove the new DIMMs and reinstall the original
(Newer MOBOs should be able to configure whichever type you have, but 
there are several different types of memory and not all MOBOs support 
all types)

3.  verify the new DIMMs match the original.  ( pc100 vs pc133,  parity 
vs non-parity, etc )

4.  check any cable connections you might have disturbed
(a loose cable may interfere)

5.  if all of the above don't fix the problem then consider the power 
supply as Anne suggested. You can test the one you have by jumpering the 
power-on pin to a ground pin and then testing the other output voltages, 
or better yet, try it in another computer you know is working so the 
only change is the power supply.

6.  As a last resort you might replace the mobo, but only if it can not 
be gotten to work when in the exact original configuration where it was 
previously working.
(a broken trace on the MOBO can prevent power on, and replacing DIMMS 
does cause some stress on the board)

If the new DIMMs you are installing are not supported by the old MOBO 
then there will be no option but to get different memory for the 
upgrade, or get a MOBO that supports what you have.

bruce wrote:

>After swapping memory DIMMS on a friend's computer, the computer 
>refuses to power up.  It has a push-button switch on the front which 
>has to be held in for four or five seconds to power down and one push 
>normally powers it up.
>
>The power cord on the back is okay (tried another cord) and the front 
>panel switch is working (used an ohmmeter) and the power supply is at 
>least partly working as there is 3.7 volts on the pin labeled "power 
>on" on the power supply when it's unplugged from the motherboard.
>
>Can't seem to find any help on the web.  Does anyone know enough about 
>these newer power supplies and how they are turned on to suggest a 
>solution?  I don't want to have to buy a new motherboard.
>bruce
>
>-- This is the linux-help@xxxxxxxxx list.  To unsubscribe,
>visit http://www.complete.org/cgi-bin/listargate-aclug.cgi
>
>  
>


-- This is the linux-help@xxxxxxxxx list.  To unsubscribe,
visit http://www.complete.org/cgi-bin/listargate-aclug.cgi