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Computer will not start

I checked the power supply and the LED light is on. Is my problem the hard drive, memory or motherboard?

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Remove the hard disk and cd-rom and than start your pc.
If its working then attach the hard disk and than cd-rom respectively.

Check all the cable again.

Posted on Mar 12, 2009

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1 Answer

Not start the OS


This is the Notebook PC category.

Posting, "....and the VoltageS are correctly on the power supply.....makes me think we are talking about a Desktop PC here.

3.3 Volts
5 Volts
12 Volts (All DC)

Green color LED (Light Emitting Diode) referred to, is the motherboard power LED.

All the power cables from the Power Supply, plugged into the motherboard?

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

Or;

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

And;

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

Or;

http://www.playtool.com/pages/psuconnectors/connectors.html#eps8

What are the voltages of the SMPS?

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

Post back in a Comment as to the computer manufacturer name, and model number. (Plus questions I asked)

Found on the back for a desktop computer, usually next to the Windows product key; or up on the side of the computer tower (Case)
I have seen some models (Dell) that there is a small front door you open, and the model number is down towards the bottom, on the inside. (Of computer, not door)

While I wait for your reply, in the meantime unplug the power cable to the optical drive (CD/DVD drive), and the harddrive.
Remove the Ram Memory.

Plug the computer back into power. Motherboard LED light on?
We are removing some devices that require power, to see if the motherboard LED power light comes on.

Hold the phone..............or are you referencing to the Green LED light that is on the back of the Power Supply?

http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph06788&tmp_task=solveCategory&cc=us&dlc=en&lang=en&lc=en&product=432786

Scroll down a little to the photo. That Green LED light?

Regards,
joecoolvette

Dec 17, 2012 | Computers & Internet

1 Answer

The computer wont start up, i can see a green light on the motherboard and nothing else. even the power button wont show up led light.


This can be a power supply problem or a motherboard problem.
One or the other has probably gone bad and must be replaced, if this is what happened.
Start by disconnecting all things from the motherboard except the CPU and memory.
If the system starts, then you've ruled out the power supply, CPU, motherboard, and memory.
If not, remove the memory and see if it tries to start. If so, then the problem is the memory.
If not, then it's definitely the power supply, CPU, or motherboard.

Aug 03, 2011 | Intel DH55TC Motherboard

1 Answer

Dell 2400 desktop pc will not turn on. Mother board flea led light does turn on.Tested power switch and wiring okay.I did swap power supply pack from a good working 2350 Dell pc same problem any...


Try to remove all components all drives (hard drives, cd/dvd roms, floppy drives, etc), all additional cards (modem, video card, sound card etc), remove the memory. Just leave the motheboard, proc and power supply. Before disconnecting everything completely discharge power by holding down the power button while the computer is unplug from the power. It should clear the flea light on the motherboard.
Test it again with just the motherboard, processor and the power supply. If still no power then most likely it is the motherboard since you already put a known good power supply. Motherboard has higher failure rate than the processor. You can swap a known good processor if there is.

Jul 25, 2011 | Computers & Internet

1 Answer

Emachines w3507 power


detarch all accessories or hardware connected to the system , then bring out the power pack itself out completely look for a soldering led to test the functionality of the power pack itself if it rotates the fan of its pack by looping the first hole to the third hole cable in the power pack connector that will head into the motherboard. therefore, check the mother board if there is any damage on it like some component if all this is false . then plug the power pack to the outlet and fix the connector of the power pack to the motherboard after detaching both cd drive , floopy disk drive leaving the hard disk and the memory . then change the memory card and press on the system there should be a solution from all this . the problem should be from the Memory not to be able to start up the system but go through those process i have given you before concluding it was the memory ok....


kindly rate this solution......

May 05, 2010 | E-Machines Bestec ATX-300-12E Rev. D 300w...

1 Answer

System not booting, k8n


Have you tried resetting the bios? turn off the computer and remove the power cable connected to the power ATX power supply, look for the "clr_cmos" jumper and change the settings from 1-2 to 2-3 for approx. 10 secs, then return the jumpers to original settings and reconnnect the power cable and turn on the computer. This was the solution when i had the same problem before. Hope this helps you too.

Oct 01, 2009 | ASUS K8N-E Motherboard

2 Answers

Dell dimension 2400 blinking amber light


1. Remove All External Devices
2. Check the Computer's Power LED
3. If the power LED has not changed unplug the Power Cable From the Computer Disconnect All Hard Drive Power and Data Cables and power on the computer. If still no go.
4. Remove All PCI, PCI-E, and AGP Expansion Cards .
5. Remove All Memory From the Computer
6. Reseat the ATX and 12-Volt Connections . The ATX connector will be a 4 pin square connector connecting to the motherboard from the power supply and the 12-Volt Connection would be the biggest connector with a lot of colored wires.
7. If still no go.
8. Disconnect the Power Connection to the Chassis Fan
9. If the light still flashes then it could be a power supply or motherboard failure. Try a good know power supply first and if that does not fix the problem it is the motherboard. Also check the back of the tower for 4 lights lables ABCD or 1234.
Rate if useful.

Aug 11, 2009 | Dell Dimension 2400 PC Desktop

2 Answers

EMachine T3958 Won't start - Please help


You need a voltmeter to check the supplies

5vdc & 12vdc are the two easiest becasue they are are the ones which are on the connector which supplies the Hard Drive you have just replaced

Red is 12v Positive Yellow is 5v Positive and the black wire is Neutral

You can remove the main board connector from the power supply to the MB but you need a copy of the Motherboard installation manual to tell you what supplies are on that connector

Jul 03, 2009 | E-Machines eMachines Desktop PC

1 Answer

Computer can't boost up


There are a host of things that could cause this. The first thing to check is to mak sure you have the proper memory setup for your motherboard. Often these days you need to install memory in pairs for the board to boot. Refer to your motherboard manual and make sure the memory you have installed is right fro your board and that you have it installed in the right slots. If you do and it still doesn't work, please reply with your motherboard, CPU and memory specifications so I can look into this further.

Jun 18, 2009 | Computers & Internet

3 Answers

We've had a Gateway 816GM desktop for about 3-years and except for the usual PC problems it's been fairly reliable. However, in the last few days it started locking up, no video, then it starting hanging...


Bill,
If the hard drive is still good, your files are safe. Replacing the motherboard may mean you will need to reinstall the operating system so you will have to get the files off before you do that.

Now, even though it could be the motherboard, it could be any number of things. If I read your post correctly, nothing happens at all now? You push the power button and nothing? This to me sounds like the power supply. These go out quite frequently and a failing power supply can cause it to lock up. When the power supply fails completely, then you don't get anything. These are relatively inexpensive.

If a new power supply does not solve your issue, then start by removing all internal cards, floppy drives, cd drives, hard drives from the computer. Actually, you can do this first to make sure it still doesn't do anything before replacing the power supply. Then try and turn it on only with memory, cpu, cpu fan, and the onboard video (or video card if it doesn't have an onboard video port). If it does work, then you can add each item back one by one until you find the culprit. However, in my experience as a PC tech, this is almost always the power supply. Probably something like 95 % power supply, 4 % motherboard, and 1 % other. Good luck and if you need any further assistance, let me know. Also, I would appreciate it if you could give this solution a rating of fixya. Thanks! :c)

Feb 15, 2009 | Gateway 816GM PC Desktop

2 Answers

No video


Go to the Asus website and download the drivers for this board. It's most likely that it did not come with drivers installed. Hopefully this will fix the problem. Good luck.

Dec 23, 2008 | ASUS P4V8X-MX Motherboard

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