Question about Dell Dimension 5150 (DIM515MIN) PC Desktop

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I have a Dell Dimension 5150 with a P4 3.0GHz and 3GB DDR2 Ram. About a week ago it started shutting down...cold. Not a Windows shutdown. It is like someone unplugs the power. It will then start booting again. It will restart sometimes, but most times it will keep doing the same thing. If I leave it set for awhile, it will come up for an hour or 2 but then do the same thing. I checked the power supply (w/o a load) and it seems OK. I tried jumping the Pwr On line in the main power connector, but still does it. I tried removing some RAM. I looked at the front panel assy. and checked the switch. It seems OK. It goes to ground when pressed. I am trying to get a used front panel assy. on eBay but that will take a week or more. Just wondered if any of you fellow experts had any other suggestions. I am thinking it could be the motherboard. Is the holding circuit for the power on the MB, on the front panel assy., or in the PS? Anyone know? Thanks all.

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  • Wayne Mineard
    Wayne Mineard Sep 06, 2010

    It is not the power supply. It is not the HDD. I redid the thermal heatsink compound. I am going to replace the front panel connector. Funny has been up longer right now than it hs been for days. The only thing I did was to move the power cord to another outlet. If that turns out to be the problem,,,,GRRRRRRR!

  • Wayne Mineard
    Wayne Mineard Dec 02, 2010

    Just for the was the motherboard.



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Syptoms u have identifies are most probably linked to registry errors on ur computer it is wise to run? a registry repair scan with reginout? registry cleaner....

Posted on Sep 01, 2010


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Dell Dimension 5150 supports DDR2 400MHz (PC2-3200) and DDR2 533MHz (PC2-4300) unbuffered SDRAM Memory (DIMM). You may install a total of four DIMMs in capacities of 256MB, 512MB, or 1GB. The maximum memory supported is 4GB.

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To proceed, ensure that the PNY Memory is compatible with Dimension 5150. If not, install compatible (memory type, speed, capacity) DIMMs.

Let me know if further help is needed.


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