Question about Dell Dimension 5100 (D51L1) PC Desktop

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When i switch off the my dell dimension 5100 computer i have to disconnect to the power cable from the supply and wait for about three hours before i can switch it on. what should could be the problem and how can i solve it.

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Replace the power supply.

Posted on Mar 12, 2011


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Power supply instalation manual for dimension 5100

power supply installation for dell dimension 5100 is not that much hard, what you need to do is to remove the old power supply and unplug the cable from the mother board

Oct 26, 2011 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

When i switch off my dell dimension 5100 i have to disconnect the power chord from the supply for about three hours before i the computer get back to work. what could be the problem and can it be solved

Sounds like an overheating issue, once the machine gets up in temp from being used it wont allow you to turn it back on until it has cooled down a large amount. This could be an issue on your motherboard or in the power supply. To be quite frank with the age and quality of the machine I would use it as is until you can afford to replace it swapping either the motherboard or the power supply I think would not be worth the cost in time or price for the components.

Mar 12, 2011 | Computers & Internet

1 Answer

I have a Dimension 5100. There was a big thunderstorm about a week ago and our power was out for maybe 4 hours. Now, the computer will not turn on. It, along with the monitor, printer, router, etc. are...

you mostlikely blew a fuse in your power supply, either that or your cord became damaged, to check the cord, plug it into another computer or a monitor, 99% use the same type of cable, if it is your power supply, you need to remove the ps from the desktop, obviously while unplugged and undo the screws for the ps casing, then simply remove the old fuse and replace it

Aug 27, 2010 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

I have a dell dimention 5100 it was working fine this morning. But now i can turn it on.

Suggest you bypass the Power On switch with a jumper wire used on the Soft Power On of the Power Supply.

If the Power Supply comes on, you have a bad Power On switch.

If the Power Supply does Not come on, you have a bad Power Supply.

The Power On switch is located inside the plastic Power On button.
This is one generic Power On switch that I have found fits many computers,

The jumper wire is used on the 24-pin ATX main power cable.
This is an example of a 24-pin ATX main power cable, and it's connector,

Dell Support > Dimension 5100 > Technical Overview > System Board Components,

The 24-pin ATX main power cable is plugged into the motherboard, as shown in the photo to the right, on the Playtool link.

The jumper wire is used to make a Momentary (Brief) contact, with the green wire, and ANY Black wire.

The Green wire is the Soft Power On wire.
ANY Black wire is a Ground wire.

There is a correct procedure for doing this.
The safety risk is very minimal.
The Soft Power On voltage is 5 Volts DC.
Two D cell batteries produce 3 Volts DC.

An insulated wire should be used. You may wish to wear a glove on the hand that connects the jumper wire, just for an added feeling of safety.

Should you wish to know the correct procedure, simply state so in a Comment. Believe upper right of your page.

Jun 24, 2010 | Dell Dimension 5100 (D51L1) PC Desktop

3 Answers

Computer will not turn on at all. Dell Dimension 5100 desktop

I would unplug the power supply from the motherboard, wait a little while and then plug it back in.
Try to power everything back up and it should come up.

I am assuming you are getting a light on the motherboard that indicates power is being supplied?

Feb 15, 2009 | Dell Dimension 5100 (D51L1) PC Desktop

1 Answer

Slave drive into Dell Dimension 5100

Yes it does. It may not have an IDE cable if using SATA hard drive, but it does have a port on the motherboard to plug in the cable you take from your 4600.

Don't forget to rate your answers please!

Jun 07, 2008 | Dell Dimension 4600 PC Desktop

1 Answer

Power supply ?

I'd recommend purchasing a new power supply.

Your Dell Dimension 5100 comes stock with a 305W power supply. This is a bare-minimum wattage that will only handle what they ship on the system & not much more. You're better off upgrading the power supply with a compatible after-market model.

You can go to a PC parts store in your area and take your chances...but they're usually more expensive then Internet sources (they've got to pay for their brick-n-mortar store overhead).

Here's a link for a very inexpensive replacement 400W power supply for your Dell Dimension 5100:

This particular site offers $8 Flat-rate shipping & a 1 year warranty. Your power supply is only $49.99 - you might be able to find it cheaper elsewhere, but that's the best I could find with a quick Google search.

If my answer helped you, please provide feedback :-)

Good luck!

May 05, 2008 | Dell Dimension 5100 (D51L1) PC Desktop

2 Answers

Dell dimension 5100, power button has turned orange

If under warranty contact Dell? I had this same problem, a new motherboard and fan assembly fixed this problem. Bad capacitors on the motherbard.

Apr 12, 2008 | Dell Dimension 5100 (D51L1) PC Desktop

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