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Pc trys to start up then just shuts down after installing more memory and blowing dust from cabinet.I have tryed removing all conponets cleaning and inspecting then reinstall.But still wont start up replaced power supply and isolated all compontes could it be the mother board going to ground? ken

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Hi Ken,

It is a possibility that the motherboard is on it's way yes but the fact it's still receiving power I'm not so sure.
Take a close look at the motherboard for any swollen or discoloured capacitors. If you find any then your looking at a new motherboard.

If you can see any remove the memory. Get a soft, clean, dry paintbrush and clean the memory slots with it, blow quite hard on the slots to remove any stubborn dust.

Get the original memory and put that in the machine and see if it will boot up.
If it does then chances are that the new memory you have got is either faulty or the wrong clock speed.

Good luck and please let me know how you get on.

Posted on Nov 12, 2009

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Reinstall the memory that worked OK.

If it still won't start, you did something wrong during the RAM upgrade. Look for missing connections or a wire that may have come loose during the "dust blowing". Also, be sure you didn't leave the cooling fan/fins loose on the CPU heatsink.

If the old RAM still works OK, then you may have installed the wrong new RAM. Make sure the speed and CL are identical to the working RAM. Just because it fits in the slot, that doesn't say it's the correct RAM for your computer. Wrong RAM will prevent startup in the way you mentioned. Do a Google search to be sure you're using the proper RAM upgrade and that your computer /operating system can actually address how much you put in.

Posted on Nov 12, 2009

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