Question about Dell POWER SUPPLY Power Supply

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Dell xps 710 will not start when it has been on. When it is turned off for 2 or 3 hours it will start

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I am pretty sure this is not a power supply issue.
There is a very strong chance it is an OVERHEAT issue

My first step being the easiest would be to take off the side of the computer after disconnecting it to check for dust build up in and around the cooling fan and power supply.
This is easily fixed with a can of compressed air meant for cleaning computers and just requires that you take it outside and blow it all out whilst wearing glasses and without poking the nozzle into anything.

Ram slot problems are quite rare nowadays but it may not harm to just remove it and blow out the slots and then put it back in.

Check that any extra cards are also seated fully as this can happen esp. if the computer was moved or leads were pulled that connect to them.

Computer are designed nowadays to shut themselves down if there is a problem.

What you should do is check the fan assembly and if it is loose at all that would give good reason to do what I am going to advise.
Disconnect the fan from the board.

Check your manual for the exact instructions but you should remove the cooler completely


Now with nothing more than isopropynol and cotton bud sticks or another alcohol based cleaner remove the old thermal grease / sticker from the top of the CPU (make sure it is clean)

At this point it is up to you but you could consider a newer better cooler
You could take your old cooler to a good computer shop show them it and just ask for a better one

If you are using your original cooler then here we go
Do the same with the underside of the cooler.
While the cooler is off it may be worth giving it a good 8low job
Now apply some new thermal grease (most computer shops have it)
Be careful about how much you put on
Here are some basic instructions
Once you have re-assembled your cooler and re-connected it check everything is OK and power up the computer.

If everything went to plan you should now be back in business.

Another consideration is that many cases have places in them for extra fans and usually extra connections on the motherboard too.
They are quick and easy to fit.

Quite often I will fit TWO in what is called a push/pull configuration. One pulls cool air in while the other pushes hot air out

Posted on Sep 07, 2009

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I have the same problem and from lots of web research I suspect failed capacitors in the power supply. You will find it will take longer and longer between turn on's before it will boot. If it's the same problem they you will get a flashing amber light on the front. I've seen a website that explains how to look for bulging capacitors in the PSU and replace them and all is OK. Alternatively if you are not up to that you will need to buy a new PSU. Or just buy a new non-Dell computer. All my previous computers have been Dell but they seem to be way down on quality now and lots of people have the same problem - just out of warranty.

Posted on May 05, 2010


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