Question about HP Pavilion dv9500 dv9600 and dv9700 FF Athlon Motherboard - 450799-001

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Hp pavillion dv9700 has black screen on start up followed by 1 long and 2 short beeps and then fan turns on loud and for a long time keeps at it and then windows sound turns on and then blindly i place my password hit enter and sounds as it enters properly but at all times screen is black and no led lights either. This problem happened after I downloaded microsoft fixes for freezing screens and computer crashes but at least I had led light on the back and always could eventually turn the screen on but not any more after these downloads. Is there a way to reverse this without a screen? I tried connecting with external screen but there is no signal.

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  • HP Master
  • 78,267 Answers

I think the mother board has failed.

Posted on Apr 05, 2017


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Posted on Jan 02, 2017

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SOURCE: start up problem

Hi Irmf,

Generally, that loud beep you hear is your BIOS (the part of the computer that turns on everything else) alerting you that there is a serious error with it's ability to function. Just for example, the beep could be due to your RAM not being properly seated, your BIOS being damaged or missing, your Hard Drive not being detected, or a non-system boot disk being inserted.

So troubleshooting that particular problem sounds tricky. But I do have a few possible repairs you can attempt that would at least let you know why it is making these error beeps, and go about seeking repair assistance.

1: Remove your RAM from your unit. On the bottom of your computer, you will find one or more small covers that are easily enough unscrewed to allow you access to some of the internal parts of the machine. Underneath one of these panels will be (usually) two thin white slots arranged either back-to-back or stacked as a staircase one on top of the other. These are the DIMM slots for your computer, and should contain your RAM (the green small rectangular circuit boards that contains your your temporary memory). You can release the pressure release on both sides of each stick, and lift up gently to remove the sticks of RAM. The RAM is removed and replaced by inserting it firmly into the DIMM slot at approximately a 45 degree angle. You may only have 1 stick of RAM, but what you need to do is alter the configuration of what you have. Such as: Remove both sticks of RAM if you have two, then only place one into the machine and attempt to turn on. If it does not turn on, repeat by removing the 1 stick and replacing it with it's sister stick. Test and see if it works / shows any improvement. If you have 2 RAM sticks, one might be bad and you can determine if it is by testing both and eliminating each as working or not.

2: If removing your system RAM and replacing it firmly into your unit does not chance the condition at all, next I would suggest attempting to connect an external monitor to the laptop and perhaps producing a video output. Your laptop should have a VGA connection (usually blue, has approx. 15 pins, and is shaped like a trapezoid). Also, your laptop should have a Function key (the F-numbered keys on top of the keyboard) that enables you to switch the video output from the laptop screen to an external CRT or LCD. Usually this is F4, F6, or F8. It should say CRT/LCD or have an image of two rounded squares on it, in blue painted decal, underneath the F-1-12 part of the key.
This might allow you to determine that your screen is bad, and perhaps it will mention why. Lots of possible error messages with that, if it works at all.

3: You can remove the casing from the laptop if you are very careful to notate where each screw is removed from so that you can re-assemble it afterwards. Locate the CMOS battery on the motherboard (it looks like a larger, flat, watch battery). If you remove this, and place it back into the motherboard, you can often cause your BIOS to reset (potentially removing an improper BIOS setting or update).

Otherwise, you are limited to what you can do yourself without the use of full technical manuals and equipment to test the integrity of individual components in the laptop to figure out why it won't post at all.

My personal guess, is that it is a motherboard issue, but saying 'it's a motherboard issue' without attempting some troubleshooting first is almost a cop-out if you're a tech. If it has a warranty, I would suggest having HP repair/replace parts on it under your coverage rather than attempt to solve this yourself, but the steps I've outlined are to the best of my knowledge how you would eliminate possibilities that could be related to your error and no display.

Sorry for the length of the post, but I hope that helps!

Posted on May 04, 2008

  • 110 Answers

SOURCE: HP Pavillion dv9000 - won't power up

There was a major problem with my old HP Pavilion, so major in fact that HP replaced it entirely.

IF you can get your laptop started, then try updating the firmware by going to and navigating to your particular model. The update you're looking for is BIOS Firmware.

If your laptop is still under manufacturers warranty, then yes, this IS a known problem, and they will send UPS to your door with prepaid packaging to return it to them. They are starting to catch up with the backlog but it seemed to be a frequent fault in the earlier versions. Happily they seem to have fixed it in later notebooks.

If you need the software or data from it, you will have to take it to a store who can remove the hard drive and copy the data off it. Where I live, in Canada, Future shop did that but it cost me $70. Unfortunately there is no guarantee if you bundle your notebook off to HP that they won't simply replace it, so weigh up whether the data on it is worth paying a fee to back up before you send it off.

Posted on May 26, 2008

  • 538 Answers

SOURCE: Blank screen, led lights on, intermittent beeps

sounds to me like the battery may be at the end of it's useful life..usually around 2 to 3 years..

Posted on Oct 22, 2008

  • 916 Answers

SOURCE: Screen goes black after windows XP logo, then no response.

I would suggest checking your hard drive to see whether or not it has a bad sector on it.

Posted on Dec 20, 2008


HP P4B-MX is Award Bios

Award and Phoenix BIOS:

1 short beep: Normal
2 short beeps: CMOS error
1 long and 1 short beep: DRAM error
1 long and 2 short beeps: Video card error
1 long and 3 short beeps: Keyboard error, or video card error
1 long and 9 short beeps: ROM error
Long continuous beeps: DRAM not installed correctly, bad memory, or incompatable
Short continuous beeps: Bad power supply

Posted on Jan 19, 2009

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