Power light on computer flashes..tried the trouble shooting advice w no results. Bestec power supply model atx 250-12z. Unplugged computer to clean and now wont turn on..No fan no nothing..Just a green flashing light.

The power supply is very inexpensive and can most likely be bought from any of your computer retailers, Amazon - Just make sure to confirm the right model type of power supply. BEST to have it tested before replacing it. To make sure that is the issue.. Many computer shops will test for free.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/william_02fc2766c1e13b73

Most computer testing facilities will test your current power supply for free. A replacement is very inexpensive to replace. Bestbuy, MicroCenter, small computer shops and buy replacemnent from Amazon.com, newegg.com.. Just make sure you have the correct information for your replacement. The model number on the power supply would be your best bet in most cases. Good luck and have a great day. I buy power supplies as low as $15 dollars Generic

If you need further help, I’m available over the phone at https://www.6ya.com/expert/william_02fc2766c1e13b73

The Green LED light you see flashing indicates you have a bad Power Supply.

Computer unplugged from power, computer on a table, computer case open, observe Anti-Static Precautions.
Clean the inside of the computer out with a can of compressed air for computers, (Or may take two, and a few Q-tips), and replace the Power Supply.

Supporting data:

HP Support > Pavilion 523w desktop computer > Main support page,

http://h10025.www1.hp.com/ewfrf/wc/product?product=90859&lc=en&cc=us&dlc=en&submit.y=9&submit.x=7&lang=en&cc=us

Click on > Solve a problem > Start Up/Shutdown/ Power > Power Management

Click on the + sign to the left of > Power supply light is on or flashes


Replacing a Power Supply,

1) http://www.fonerbooks.com/r_power.htm

2) http://www.videojug.com/film/how-to-install-or-change-my-computers-power-supply

The Power Supply is an ATX form factor. The ATX style of Power Supply is found in over 80 percent of personal computers out there, and is readily available everywhere.

It's a 250 to 300 Watt power supply.
Probably made by Bestec, HiPro, or Delta, or some other generic power supply manufacturer of low quality power supply's.

Has a 20-pin ATX main power cable, and a 4-pin ATX +12 volt power cable.
Plus the usual amount of 4-pin Peripheral power cables, and a Floppy Disk power cable.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph07845&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&product=90859&lang=en

Scroll down to the illustration and photo of the Motherboard.

Typical 20-pin ATX main power cable,

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

Typical 4-pin +12 Volt power cable,

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

Outages are frequenly accompanied by power surges. It sounds like your power supply got cooked and does not produce enough power to start your computer anymore.

They are inexpensive and are easily replaced. Take a couple of digital pictures of it in your case and then remove it.
Measure the dimensions and go find an ATX power supply that will fit. I recommend that you go up to at least 350 watts. Use your pictures to help you install the new power supply.

If this helps please vote for my solution.

Hi;
you should check the capacitor in the secondry side of the power supply,

Your power supply is fried. I had the same problem with my Bestec ATX 250 power supply. I fixed the problem by installing the StatTech model: ATXPOWER250. It was easy to install and works well. It is almost identical to the original but more quiet. I got it for $29 at MicroCenter.com. Also at online Newegg.com, Radioshack.com, Provantage.com, June 20,2009

Repair shop

I have already replaced mant Bestec ATX-250-12E power supplies because they have an internal failure. Consider yourself lucky if the thing doesn't power up your computer because it has a problem of imposing the +12 volt line onto the +5 Volt line then blowing out the mother board. Sometimes you aren't so lucky because once the damage is done then it is to late to just simply replace that piece of junk. I was lucky with my daughters E-Machine because if she tried pressing the start switch on the front of her computer it would sometimes come on and sometimes not. She just mentioned this to me and I immediately replaced that Bostec ATX-250-12E before it could do any damage to her computer. If anyone has an older E-Machine or an older Gateway machine then it would be a good idea to see if it uses that Bostec-ATX-250- 12E. If it does then go order another power supply, anything but a Bostec, and instead of a 250 watt order a 300 watt or better. I hope that this has helped those that might have this problem before it destroyes *********** boards. Marty

Hi. NO, *********** board is not fried. I am not sure what the problem is but I do know how to fix it. It is usually casued by power outages (even if you have UPS supply).

1. TAKE OUT THE ELECTRICITY LEAD TO THE COMPUTER. Look inside the computer and find the bunch of wires coming from the power supply unit (the box thing at the top with the fan and all those colouted wires!).

2. Find where these wires run into a plastic connector and plug into the mother board. Unplug it.

3. Now plug the electicity lead back into the computer. The light should now stay ON.

4. Plug in the connector again... and boot up. Leave it run a while to convince it!

5. Repeat this process if it does not work first time.

This should fix your problem . It works for me when I get this problem.

Friend in Spain

May be the power supply gor affected by the damage because the cd rom busted so better than trying to use the same power supply better get another new one because it may damage the other parts of the computer.......