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Power Supply does't start

From a HP Vectra PC

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I just got this Vectra VL420 from a surplus store. I try to start up I get this funny music and then two beeps. I understand two beeps indicate power problems. But not sure what to do to rectify this....


From memory I would say you are in the right ball park.
I remember now. Error 2 means the power supply is in protect mode.
First check the wiring going to the Motherboard from the PSU. There is a four pin connector that lets the PSU know if all is well with the main board. If that is not connected, that may cause your problem
Try a new PSU. They are fairly cheap. Match the power on the specification panel stuck to the PSU.
If those don't fix it, a new motherboard is the next step.
Hope this helps.

Nov 22, 2010 | HP Vectra VL420 PC Desktop

1 Answer

Hewlett packard vectra vl420 mt 3 melodies music 3 beep


sometime pc no give any error but there is problem.such as monitor,power problem and many more.

Jun 24, 2009 | HP Vectra VL420 PC Desktop

1 Answer

Beeps 2 times & a warbling noise when trying to boot up - unplugging power lead & pressing ON/Off button & reconnecting power lead starts up OK - but it can be OK for several days & then repeats the p


The Cause of Problem:

The Power Buttons electrical circle sometimes just braked it by one of sensors and the result is the 2 beeps and Power Supply is in protected mode error.

The whole computer is turn off but the power button is turn on and this is the nub of the matter. Because if you want turn on the computer you can't because already turn on but just the Power button and you can't do anything.

The solution:
You need just change the Power Supply and don't do anything just the power cable put into the Power Supply after turn off computer.
Finaly change back the Power Supply.

Apr 25, 2009 | HP Vectra VL420 Intel Desktop PC - Intel...

1 Answer

Hi, there, i have an old hp vectra vl400 mini tower system which requires a so-called power protection device to start, but this device has been removed by somebody. Is there a quick workaround possible...


Hi,

in the meantime a friend of mine offered me the power supply suitable for this system, so i now can fully use it! thanks to all!

regards

friedhelm

Jan 03, 2009 | HP e-PC 42 PC Desktop

1 Answer

HP Vectra has no fan hook up!


Most fans are either 5v or 12v and have a hook up on the motherboard. If not the fan should have a + and a - side (normaly red is + and black is - ). If push comes to shove use the same voltage lines off a hard drive power connector on the power supply if the motherboard doesn;t have the connector built in.

Apr 20, 2008 | Computers & Internet

3 Answers

The PC doesn't work


I know this is about a year later but I just had the same problem too last night.

When you turn on the PC it plays this crazy tone music right? If so, listen to it then at the end you will hear a couple of beeps. In my case my system beep twice at the end. 2 beeps for me indicated Power supply was in protected mode. Luckly I had a spare P4 PS laying around which solved the problem.

If you have different beep code google up "HP Vectra VL420 Beep Code". Standard beep code doesn't apply to this mobo since the BIOS is customized.

My power supply was a standard P4 ATX... no special design from HP you should be able to get one at any computer store. Beware just don't the cheapest one it cuz they aren't build to last and aren't reliable. Trust me I've seen too many people buying cheap power supplies and having them kill their mobo's.

Apr 23, 2007 | HP P5750-69001 - System Board/P4...

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