Memory.

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I was fixing a customers computer today after they called up reporting a no signal error message on screen. Once I booted the machine up i was given post beeps of 3 short. I opened the machine up and removed one of the ram sticks , rebooted , and it went through post fine and windows booted up. I figured it was a bad ram stick but thought id remove the other stick that was present and replace it with the one i had removed. strangely the machine went through post and booted up fine again???
anyone seen this before?
cheers all

 

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I have seen this before but can be different problems causing it.

was the ram a matched set? and was it running in dual channel? (if yes to both then not whats below)

I have seen ram that is not a matched pair (although the user thought it was) set for dual channel and when the system was powered on there were voltage issues that damaged the ram.

Other ones

Check the BIOS for the voltages on the ram and see if it is set at what the manufacturer states for the ram. It could be the the motgherboard is detecting wrong type of ram.

ESD causing damage to dimm slots that has in turn damaged the dimm inserted into it.

Crap power supplies over volting the dimm slots but not all the time.

 

cheers for the replys guys

on asking her for anymore info she said it wouldnt switch on at all for a couple of days a few weeks ago but she left it for a week and it powered up fine ??

power supply problems ?

 

I recently had exact the same problem, removed a stick and i thought it was a bad ram module, then the server crashed again so i tried the other stick on it's own and it booted up, it could be the PSU.

 

Could be a power supply issue then. Generic systems like dells, compaqs etc use low quality power supplies so this could be the issue. Also on generic systems using all of the slots can cause voltage issues which can cause issues such as this.