Question about System Power Supplies

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Gren power light come but won't boot up

On hp pc I push the power button and the green light come on you don't hear the hard drive start up the pc just set there .

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Well could be a few things... But i would start with the PSU, Ram, Then the mobo

Posted on Dec 02, 2008

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Hp m1160n Green light is flashing, went thru all of the steps listed, and the troubleshooting guide on the hp website.No dice...computer will not turn on. tested power supply = good. tested power switch =...


Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect/ boot up a computer hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them there probably old and faulty
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electrical extensions or just replace them they are probably old and faulty a computer needs its connections to have an end so any faulty leads will end up with a computer error

hope this will help
don

Feb 27, 2011 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

2 Answers

Computer acts like it in standby mode will not power up, made a weird noise according to my daughter and quit


Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect/ boot up a computer hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them there probably old and faulty
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electrical extensions or just replace them they are probably old and faulty a computer needs its connections to have an end so any faulty leads will end up with a computer error

hope this will help
don

Feb 23, 2011 | Dell Dimension 4400 Power Supply ** FREE...

1 Answer

Green blinking light on power supply. Computer will not power on. Power supply appears to be good because I connected black and green leads from motherboard connector with a small piece of wire, and the...


One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect your hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them there probably old and faulty
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electic extensions or just replace them they are probably old and faulty a computer needs its connections to have an end so any faulty leads will end up with a computer error

hope this helps
don

Feb 12, 2011 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

2 Answers

The machine won't power up. The green light on the PS flashes. What does this mean? If I disconnect the large plug from the mother board the green light will come on steady. Plugging it into the mother...


Can you tell if the flashing is a pattern. count the flashes ( long and short) in a cycle. This will provide an error code to hopefully discover the problem.
You may also try removing and reseating the RAM and Video card, blowing out the connectors with compressed air before reseating.. Also look closely at the components on MB for any signs of swelling, leaking, burning etc. I suspect the MB.

Nov 11, 2010 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

1 Answer

Green light on power supply flashes rapidly when I plug the computer in. Computer will not power up at all (no cooling fans start, no lights illuminate and no beeps come from the unit). When the power...


if the cooling fan on your PSU power supply unit does'nt spin when you start your PSU is faulty if it does then
replace all the leads that attach to your hard drive including electrical extensions + IDE,SATA the ones that attach from your motherboard to hard drive
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty or just replace them they are probably old and faulty ?
hope this helps

Oct 21, 2010 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

1 Answer

I have a HP M 7160 that will not turn on. There


For non-BIOS issues:

If you did not try to update BIOS before the problem started then try these troubleshooting steps.

1. Full power down. Unplug the power cord from the Power supply. Then hold down the pc power button (this discharges any residual power in the capacitors).

2. Open the case and reseat the graphics card, hard drive, and RAM.

3. Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in different RAM slots. Try one stick at a time to see if you can get the PC to boot. If this works, then the remaining ram sticks are damaged.

4. Set the Cmos jumper to clear. Power up the pc. Power down the PC. Set the Cmos jumper back to normal position, power up the PC.

5. Unplug and replug all the power supply cables.

6. Check the powersupply function. Either by a powersupply voltage checker (20-25 dollars at local PC shop), get the supply tested at a PC shop (usually a free service), put the powersupply in a different pc, or try a different powersupply in the problem computer.

If the Powersupply checks out ok, then you will have to do a process of elimination to find out what part or parts are the culprit of the No-Boot.

Start by pulling all the ram sticks if you have not already. This is the easiest components to check and usually a culprit.

Take out one of the RAM sticks if there is 2 or more. Swap the RAM sticks in different RAM slots. Try one stick at a time to see if you can get the PC to boot. If this works, then the remaining ram sticks are damaged.

If it is not the RAM, you have to continue removing items such as sound cards, un-plugging hard drives and optical drives, other PCI cards. Do this one at a time until you find the culprit. If a POST screen, meaning you can see Anything from the PC brand name to Motherboard brand name appearing on the screen. The PC may not boot to windows, but it Does post at this point, and with that the problem is resolved. If windows does not load, then you have a new problem. Best dealt with asking a new question.

Good luck!
Brian

Jun 20, 2009 | Bestec (ATX100-5) (ATX1005B) Power Supply

2 Answers

Our HP Media center pc will not power on. I push the button and the button does not turn green or power on. A green light on the back flickers, but that is all. I forgot to ask if it could just be the...


Make sure the switch on the back of the power supply is set to the position that has the line on it. If you still can't get any power, then try another known good power supply, if you still don't get any power then you know the motheroard is bad.

Jun 12, 2009 | HP Pavilion Replacement 200w Micro ATX PS3...

1 Answer

Plugged computer back in after move and won't start. green light in mb on.


Actually, there is nothing you can do with the hard drive. If its shorting out the power supply when its pugged in then it is defective. However, most hard drives carry a 3 year warranty from the manufacture. If the drive is younger then 3 years old, I would call the manufacture and get it repaired or replace. Hope this helps . . .

May 16, 2009 | Antec EarthWatts EA380 380-Watt Power...

2 Answers

Pc wont turn on


removed hard drive, floppys , extra memory all pc cards
everything you can and try it again

Jan 18, 2008 | Antec TruePower Trio 550 (TP3550) 550-Watt...

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