Question about Bestec (ATX100-5) (ATX1005B) Power Supply

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HP Pavillion automatically restarts after shutdown

My HP Pavillion wit win 98 restarts after every shut down. I did some experimenting and found that if I remove the network card the system operates normally. It does the same thing if I install a new different network card.

Could this be an indication of a failing power supply???

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Re: HP Pavillion automatically restarts after shutdown

Indication of a failing power supply??? I dont think so.
more like a driver is corrupt or better yet have the on board nic card set to turn on, is there a plug that has wire attached to the nic card, unplug those and see what happens.

Posted on Jan 21, 2008

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My hp pavillion goes to black screen (no signal) intermittently and emit a beep tone

Test all leads that attach to your hard drive IDE,SATA and power leads

the leads from your (motherboard to your hard drive) make sure they have secure dust free connections and are not faulty or just replace them they might be faulty

if its a 40 pin flat ribbon type it will be the first to fail

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 something as small as an electrical fan and its lead can cause you problems

computers need all electrical power and data to continue through every working device and to have an end so any faulty leads will end up with a computer error

make sure your graphics card is securely seated with no dust built up or in the socket

if you remove your graphics check the socket to make sure its dust free

restart your computer then reinstall it this should activate found new hardware wizard

hope this helps

Jun 26, 2012 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

1 Answer

I bought a HP 6710f Pavillion desktop, running windows 7, and found out it only has a 250 watt power supply. I turned around and bought an Antec Greenwatts 500 watt ATX 12v v2.3 psu to install for future...

Presuming you mean the Earthwatts 500:
Should work, though the Earthwatts has the 24 pin ATX instead of the 20-pin.
You just need to snap the 24-pin connector apart to make it work as a 20-pin. It can be snapped back together for future motherboards.
The Bestec is just a standard ATX power supply

Mar 23, 2011 | HP Bestec ATX-250-12ZD 250w HP Pavillion...

1 Answer

I have an hp pavilian atx-250-12z and the tower itself will turn on and the mouse to will turn on but the monitor gets no signal and the keyboard will not turn as well..I have unplugged the cpu while...

Whom ever told you too: "Unplug the cpu while holding down the power button".

Is telling you something that can "seriously damage" your cpu and computer.

Or did you mean "PSU" if so there is a particular format to do a Power supply check.
For the proper way use this link:

Also many other things can cause the problems your having. Could be your motherboard too.

If this does not work, post again be sure to include HP Pavillion Model number and Operating System (i.e. XP, 7 or Vista) that way we can help pin point your system needs. Also have you done any internal repairs lately? Recheck all your connections too.

If you find this helpful please vote.

Oct 07, 2010 | HP Bestec ATX-250-12ZD 250w HP Pavillion...

1 Answer

I jus left my computer optiplex gx260 on and when

Your automatic update from microsoft probably updated your machine and shut it off, by default it is set to update if their is one, every tuesday at 2:00 or 3:00 am and will either restart or shut down your machine.

if thats not it then your computer may have gone into hibernation or standby.

May 25, 2010 | Dell POWER SUPPLY Power Supply

1 Answer

Power will not stay on

PSUs don't last forever, 3 / 4 years they are dead or going.
use a digital muti-metre to test the Molex connections
should be 12volts, 5volts, and 3.5 volts for motherboard conns.

or with E.S.D. kit Replace the PSU, very quick and easy job.

15 minute job.

Hope this helps

Apr 29, 2009 | HP Bestec ATX-250-12ZD 250w HP Pavillion...

1 Answer

Tower problems

You may need to replace the cmos battery, its a cr2032 3v button cell
Make sure all your expansion cards and memory are reseated.
Make sure all cables are reseated.
your power supply could be bad

If that doesn't work try this

Here is my fix for the dell dimension 4400 amber light problem. It works!
replace cmos battery.
then unplug power cord form wall about 5-10 secs.
then plug it back in, wait 5 secs.
If amber light comes on, press and hold power button until it goes out.

(with light out, press and hold power button while amber light comes on and goes off again holding power button 2-3 secs after light goes out.) repeat whats in parenthesis until computer turns on
it should only take about 6, 7 tries.

After the computer boots, you may want to setup cmos or boot into windows.
After you shutdown, unplug power cord for 5-10 secs then plug it back in.
Press and hold the power button, computer should come on.
I found that's the only way to turn on the computer.
If you shutdown and don't unplug power cord the computer may not boot, mine didn't.
Strange I'd say

A+ Technician

Apr 01, 2009 | HP System Power Supplies

1 Answer

I need to know how to reboot my packard bell pc

Under the start menu there should be an option to shut down; restart; sleep. Use the restart option & it will start rebooting. If this does not work then close all your programs and hit ctrl+alt+del twice. This should start a reboot. Hope this helps.

Dec 21, 2008 | Packard Bell (190169) Power Supply

1 Answer

Power supply light flashing.

Computer power supplys are modular replacement fixes. Better to replace the whole thing then try to repair.

Sep 24, 2008 | HP Bestec ATX-250-12ZD 250w HP Pavillion...

1 Answer

Problem in my system

A bigger fan will keep it cooler

Mar 27, 2008 | System Power Supplies

2 Answers

Power led flashing...

The described problem might not be the Power Supply Unit, there are a number of different reasons that may cause this symptom. Consulting HP would be advisable.

Jan 30, 2006 | HP Bestec ATX-250-12ZD 250w HP Pavillion...

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