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I have hp pavilion dv9000 and it was working for a few months and then once it wouldnt switch on. the power light flashes which indicates it needs charging but when i put the adapter in it says it is charging but it still doesn't switch on and after so seconds it stops charging. i think i might put accidently put it in hybernate. what is the cheepest way for me to fix this

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Don't quote me on this, but seems like it may be an issue with the battery. I would take it to a computer repair shop, or at least a RadioShack, and see if they will try the new battery (with laptop plugged in) before purchase.

Posted on Dec 05, 2008

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Hp pavilion modelp6510f press power switch on top of pc does not light computer fans blow but compute does not turn on


ok th p6000. complete range when they were made had to be recalled as they put the copper expansion pipes ran across the gpu & cpu hence a massive overheat problem. they put copper shims over the cpu & gpu but this worked for a short time but it was inevitable and both units ended up being cooked i had this problem with mine. so if you have tried external monitor with no images it would sound or more likely to be the gpu cooked sorry for the bad news.

Jan 28, 2014 | PC Desktops

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New DC jack, powers up but no display. Strange power LED behavior.


No Rob, you aren't running out of options. You just haven't diagnosed far enough, because you don't know the path.........hence where I come in.........

Using the HP Pavilion dv6000 series, and Pavilion dv9000 series of Notebook PC's, as an example,

http://mayohardware.blogspot.com/2010/04/important-parts-on-dv6000-and-dv9000.html

There are two Power MOSFET's being used.
The Fairchild Semiconductor Industries - FDS6679 - Power MOSFET, and the Alpha & Omega Semiconductor LTD - AO4407 Power MOSFET.

Both of these P.MOSFET's are Obsolete. However there are cross reference examples given. Let's look at two of these examples, and also note the cost,

http://www.mouser.com/ProductDetail/Fairchild-Semiconductor/FDS6679AZ/?qs=sGAEpiMZZMshyDBzk1%2fWi1qxDdW%2fXBi2qgMuZEfLVO4%3d
One dollar and one penny - USD

http://www.mouser.com/ProductDetail/Diodes-Inc/DMP3020LSS-13/?qs=%2fha2pyFadujguNNSgppBRqXbOxXLwzGsZm9SWxz1EqWpzoSJOpHpWA%3d%3d
78 cents - USD

Surface mount soldering 101,

http://www.youtube.com/watch?v=3NN7UGWYmBY

For additional questions please post in a Comment.
Regards,
joecoolvette

Apr 22, 2013 | HP Hewlett Packard ALL-IN-ONE-TouchSmart...

1 Answer

HP Pavilion a1020n will not power on.


The green LED light at the back of the Power Supply, is now a diagnostic LED light.

Tells you the Power Supply is bad.

HP Support > Pavilion a1020n Desktop PC > Main Support page,

http://h10025.www1.hp.com/ewfrf/wc/product?product=459880&lc=en&cc=us&dlc=en&lang=en&cc=us

Solve a problem > Start-up / Shutdown / Power >
(No Thanks) > Power management,

Scroll down. Click on the + sign to the left of the blue -
Power supply light is on or flashes

(When the PC worked the green light stayed on constantly. You are correct)

Now,...
1) Is the computer dirty inside? Need to know how to properly clean it?
2) Would you like to know the easy test, to see if the problem may be a $5 ATX power on switch, or the Power Supply?

3) I also suggest you remove all ram memory modules, ('Stick'), and clean their gold plated contact pins, with an eraser.
There is a proper procedure for this.

Post in a Comment if you wish to know.

Regards,
joecoolvette

{By the by. Did you or your father live in K.C.K, (USA), and does the name Philip B., ring a bell? }

Jul 02, 2012 | PC Desktops

1 Answer

Hp Pavilion a1120n will not power up.


Yes it needs a power supply. You can get a cheep one on eaby or get one off of the HP site

Hope this works,

Luke Wilcox

Dec 28, 2009 | HP Pavilion a1120n (PX759AA) PC Desktop

1 Answer

HP Pavilion A520N will not power up. Green light


Which light?? the network light?? Do you get anything when you press the power button if not it is most likely the power supply since the motherborad is still showing power also may be cpu!

Nov 17, 2009 | HP Pavilion A520n (DW233A#ABA) PC Desktop

3 Answers

Hi, I have an HP Pavilion and I am unable to switch it on


Is there a flashing light on the back? This sounds like the PC power supply has gone bad, either test with a similar PS or purchase a new one.

Sep 19, 2009 | HP Pavilion a620n (PC028A) PC Desktop

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Screen turns blank all of sudden and works normal after switching of the system for 1 hr or so.


You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:
  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display or appear black.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

May 12, 2009 | HP Compaq dx2250 Microtower - Get 3...

1 Answer

Laptop compaq presario f500,running vista.Wireless is not working,Windows cannot load the drivers required for this device. (Code 31)


Matt Sydney Aug 4, 2008 00:28:44 GMT 10 pts
I experienced this problem last night, and seemed to have fixed it this morning.

SYMPTOMS: HP Pavilion dv9000, Win Vista x64 Ultimate. Running on battery, battery level became critical; windows went into 'Hibernate' mode. Upon plugging in to mains power, and resuming the Windows session, the Wireless is still disabled, no matter what position the switch is in.


POSSIBLE CAUSE: Critical battery switches off the wireless network card to preserve power. Motherboard seems to log this status but when re-connecting to mains power the card does not receive power again. Uninstalling the driver and getting Windows to re-install automatically upon re-boot does not work.


SOLUTION: Charge up the battery whilst the computer is running. You can charge it to a substantial level, say, above 25%. Disconnect mains power so that your laptop is running on battery only. Set your wireless switch to OFF (this is usually to the left position, away from the orange indicator). Now run your computer down to the critical battery level again (perhaps overnight). In the morning when you press the power button, the 'CHARGE' indicator (looks like a lightning bolt) on the front of the laptop should flash quickly, indicating that there is no charge in the battery. Remove the battery from the laptop's underside. Wait a couple of seconds, then press and hold the power button for 30 seconds. Keeping the battery off the laptop, reconnect mains power. Boot up your PC. When at the Windows desktop and all your startup programs have finished loading, switch your wireless on (to the right position). You should now have a blue light, and wireless should once again be working. You can now re-insert your battery. You might have to setup your wireless network connection again as mine seemed to be 'lost', but at least hopefully the main problem is now fixed.




Jamie Madriz Aug 8, 2008 01:58:15 GMT N/A: Question Author
Matt, i did what u said, and i'm happy because my wireless switch is WORKING! :) Hopefully it stays this way.

Sep 23, 2008 | PC Desktops

34 Answers

Power Green Light Flashing HP Desk Top PC m7250n


During a power outage their is a surge when power come back on the grid (surge can be caused by lighting strikes akso). This surge trips the internal procters inside the power supply to protect the Mother Board, hard drive, processor and fans and any device that pulls wattage from the power supply. Since all these power using devices are trying to pull power at the same time to boot the computer back up one ends up with a loop of surge thrugh the power supply with a protective trip, reset, surge again and trip again. This will continue in this loop as the computer is trying to boot all the devices at one time (Mobo, Hd, processor, cooling fans and other devices). Simoly, more power wattage is being demanded than the protectors will allow at one time causing a protective shutdown followed by a restart followe by a protective shutdown in a continious loop.
The normall sequence for a boot is to boot the board, processor and fans followed by a boot of the hard drive, and other boot devices once the board is energised, NOT all devices at the same time, as this results in an overload and trips the protectors. This protective loop is indicated by the blinking light as the power is turned on and then shut down for protection as the wattage pull is over the demand that the protectors will allow.
Blinking light indictes you are in the protective loop.
SOLUTION: 1. Disconnect the Mother Board connector, with the computer unplugged, this will allow the power supply to reset at maximum wattage upon reboot.
2. Disconnect the Hard Drive power connector and ay boot device power supply cables, this will allow the Mother Board, processors and fans to boot without an overload of the protector inside the power supply.
3. Plug in the computer and the indicator light will be solid green indicating that it is reset and out of the loop.
4. With the computer pluged in and the Power Supply fully energised, plug in the Mother Board. The computer will now boot, and the processor fan will come on and the cooling fans.
5. After computer has rebooted, shut the computer back down and connect the Hard Drive power cable and any other power cablis that were unplugged.
6. Reboot with all cables connected and you are up and running again.

POWER SUPPLIES HAVE AN INDICATOR LIGHT FOR A REASON.
REMBER - BLINKING LIGHT IS AN OVERLOAD OF THE PROTECTORS AND ELLIMINATING THE OVERLOAD SOLVES THE PROBLEM AND THAT THE POWER SUPPLY IS WORKING AND CONVERTING POWER.
NO LIGHT MEANS NO POWER OUTPUT AND THAT INDICATES THE POWER SUPPLY IS NOT FUNCTIONING AND NEEDS REPLACED.

Hope this helps everone with power outages and lightining strikes. It is a rather common problem and can also occure when building a computer and one missmatches the power supply with the board wattage needs. If the board wattage needs are greater than the power supply output you will get stuck in a potective loop eventually. WHEN BUILDING A COMPUTER ALWAYS MAKE SURE THE POWER SUPPLY CAN PRODUCE MORE WATTAGE THAN YOU CAN CONSUME AT THE MAXAMUM LOAD.
Have a great computing experiense.

Jan 13, 2008 | HP Media Center m7250n (ED842AA) PC...

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