Question about Dell Dimension 5100 (D51L1) PC Desktop

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No Power / Start-up

Computer had a pwer blip and will not re-start. Green light in the computer by power supply is ON. No lights on front of panel. Their is power to computer. Power ON button has no response.

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If the power button on the front of the tower has no indications, then you most likely have a failure of the power supply.

Open the tower, and inspect for burnt wires. If you find no burnt wires, remove all PCI expansion card and all external connections, then connect the power cord and try to turn on. If no power, then you will most likely need to replace the power supply.

It is the least expensive part to replace on a no power situation. If replacing the power supply fails, then the front IO panel (Power button board) is next, then the motherboard is the 3rd most likely part that may have failed.

Posted on May 17, 2008

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Green power supply light is flashing so power is getting to the computer, however the computer will not start from start button. Have removed case and tried ***** start button. Didn't work. Comput


Power getting to the computer/Power Supply?
Yeah.

Power Supply good? -> NO

A) IF ALL of the LED lights were on at once, they would use less than 1 Watt of power.

B) EACH fan uses 2 to 3 Watts of power.

C) A typical Processor can use from 51 to 125 Watts of power.
Just depends on what Processor it is.

HP Pavilion a810n Desktop PC?
Uses an AMD Athlon 64 3300+ processor,
(Operates Up To a frequency rate of 2.4GHz)

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=en&cc=us&docname=c00280647

http://en.wikipedia.org/wiki/List_of_amd_athlon_64_microprocessors#.22Newcastle.22_.28CG.2C_130_nm.29

Can use up to 89 Watts of power.

Your Power Supply doesn't even have enough power to spin fans, much less start the Processor.

Want to test the Power Supply? Have a multimeter?
No? Have a power supply you can borrow for a test unit?
KNOWN to be good, and Compatible?

For additional questions please post in a Comment.
Regards,
joecoolvette

Aug 05, 2012 | HP Computers & Internet

1 Answer

Compaq presario sr5110nx will not start


When the power light is not Green it indicates a bad Power Supply.

The Power Supply in your computer is an ATX model.
ATX is the Form Factor.

The ATX form factor for a Power Supply is;
1) The case measures approximately 6 inches Wide, 5-1/2 inches Long, and 3-1/2 inches Tall.

The power cables also detail the ATX form factor,

http://en.wikipedia.org/wiki/Power_supply_unit_%28computer%29

Scroll to the bottom of the page, and look at the chart to the right;
24-pin ATX12V 2.x power supply connector.

[ Your Power Supply is also a SMPS.
Switched-Mode Power Supply,

http://en.wikipedia.org/wiki/Switched-mode_power_supply ]

The maximum rated Wattage is 300 Watts.

Primer:
A) IF, all of the LED light were on at once, they would use less than 1 Watt of power.

B) EACH fan uses 2 to 3 Watts of power.

3) A typical Processor can use from 51 to 125 Watts of power.

Your power supply doesn't even have the power to spin fans, much less turn the Processor on.
Bad power supply.

This is an example of a decent, reliable ATX power supply replacement,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4844034&CatId=4324

Replacing the Power Supply;

This is HP Support > Compaq Presario SR5110NX Desktop PC > Manuals page,

http://h10025.www1.hp.com/ewfrf/wc/manualCategory?cc=us&dlc=en&lang=en&lc=en&product=3436819&

Left-click on the top file listed in blue - Upgrading and Servicing Guide

NOTE*
This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
It may take up to 30 seconds before the first page comes up.

Shows you how to open the computer case. (Removing the side panel)

This details out replacing the Power Supply,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01355925&tmp_task=useCategory&cc=us&dlc=en&lang=en&lc=en&product=3436819

NOTE*
The plastic front of your computer is the Front Panel.
The area of pins on the motherboard, that the wires from the Front Panel go to, is the Front Panel header.

When replacing a Power Supply it is easy to accidentally disconnect one, or more of these wires. I do not know if a pinout chart for the Front Panel header is available.

I suggest you use a good light, and your cell phone, or digital camera, to take a few photos of the connections, of the wires going to the Front Panel header.
If a wire or two is disconnected, you have photos.

Also:
1) UNPLUG the computer from power before you start.
Follow Anti-Static Precautions.

Anti-Static Precautions:
Your body carries Static electricity. Static WILL fry out (Short Circuit) the delicate hardware components inside a computer. (Laptop or Desktop)

Computer on a table, computer unplugged from power, computer case open.
TOUCH an unpainted surface, of the metal frame of the open computer case.
This simple action will relieve your body of Static.

Should you leave your computer in the middle of working on it, be SURE to Touch the metal frame again upon your return.

IF, you have ANY questions as to where the various power cables go, or an associated question regarding Power Supply replacement, please state in a Comment.

Regards,
joecoolvette

[ You press the Power On button. The first chipset to receive power is the BIOS chipset.
{ Basic Input/Output System}

The BIOS program is initialized.
BIOS looks to see what devices are connected, does a Ram Memory count, turns the Processor on, then hands the computer over to the Operating System.

Windows XP and Windows 7 are two examples of an O/S.
Operating System ]

Dec 25, 2011 | HP Presario Computers & Internet

1 Answer

We had a power outage and now my HP m1264n desktop computer will not start. The green light on the back is flashing, but nothing happens when I press the power button on the front. Could it be my power...


the green light on the power supply but it dosnt relay to the mother board,the first item I would nbe concerned with is that the power supply that is,unplug your computer open up the access panel on the tower,the largest plug from the power supply,going to the motherboard unplug it . the plug has a release on it pinch inward and pull up at the sametime this will relaese it, now plug in your computer to the wall power and if your power supply has a switch on it turn it on,also make sure the 240 110 volt switch it's a slide switch on the power supply is on 110 volts if your not in europeits 110 here in the usa, if the light fails to blink or even turn on its the fuse in the power supply,if the light comes on blinking the power supply needs more attention if the light stays on full the problem lyes beyond the power supplyI would guess the fuse is the problem,now youll find two of them within the case of the power supply hope this helps.

Dec 18, 2010 | HP Media Center m1264n - 3.0Ghz 1024MB...

2 Answers

Amber light that looks like a battery sign is blinking on & off on the front panel


Hi,

A blinking amber Pwer light indicates that there is something wrong with the power. You might check the following:

Make sure the AC switch is in the correct position. (115-US)

Are you getting any fan action or noise?

Is the green motherboard LED ON?

Make sure all you MB connections are secure.

Check (or have someone check) your power supply outputs.

And for reference, here is a link to your computer's Service manual:

http://support.dell.com/support/edocs/systems/dim9100/en/SM/index.htm

Thanks for using Fixya.

Jul 14, 2010 | Dell Dimension 9100 PC Desktop

1 Answer

No panel lights, no fan, flashing front left light


the blinking lights means power issue. If you already plugged the computers power cable directly to the wall and stll get the blinking power light then your probably looking at a bad power supply in the computer.
Just for measures go into the system and if you have a video card remove it and start the system up. Also take out the memory stick and put them back in just incase during the move some components got loose. Put on your detective hat and check all connects. if problem still persist replace the power supply. In Computers terms thats called the PSU (power supply unit)
Your friend
Joel

May 29, 2010 | Dell Dimension 3000 PC Desktop

1 Answer

Will not pwer up. Greenlight blinking on back


The green blinking light can mean there is a problem with the power supply.

Try unplugging the computer from the wall, and turning on the pc on switch.

After a few minutes, try plugging it back in.

If that does not start things up, you may have a bad power supply.

If the power supply is bad, these models take standard power supplies. You should get an ATX 350Watt or higher power supply.

They are easy to replace, unplug the power from the wall, disconnect all the cables inside the computer. Unscrew the four phillips screws outside the back of the computer where the power supply is attached to the case.

Remove and replace.

If you don't feel comfortable with this, a good local computer shop can help you out.

Apr 13, 2009 | HP Compaq Presario SR1330NX (PP161AA) PC...

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

Not the power supply!


Hi

To help troubleshoot a problem, Dell Dimension 5100 has four diagnostic lights labeled "1," "2," "3," "4" on the front panel. When the computer starts normally, the lights flash. After the computer starts, all four lights lites solid green. The power button also lites solid green. If the computer malfunctions, the color and sequence of the diagnostic lights as well as the power button helps identifies the problem.

First, disconnect the power cord and remove all connections (Keyboard, Network, Mouse etc) as well as optional PCI Cards. Connect up the power cord (Monitor as well) and try powering the PC.
Check the diagnostic lights/system lights color and sequence and check the link below for more info (Assuming you have another system that can access internet)
Diagnostic Lights - http://support.dell.com/support/edocs/systems/dim5100/en/sm/tshoot1.htm#wp1120147
System Lights - http://support.dell.com/support/edocs/systems/dim5100/en/sm/tshoot1.htm#wp1114432

Reply with lights color and sequence as well as any beep codes and I will respond at best effort.

Mike

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

2 Answers

Power supply light has blinking green light


If the power box is bad, The computer will not come on. if you only get a green light, you would need to start with replaceing the power box, if you get a new one and the same thing happens, then the mother board is bad too.

Nov 26, 2007 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

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