What might be the cause of hp pavillion dv2000 not displaying on the screen at start up and giving 3 beeps, 1 long and 2 short, sometimes it boot but doesn't get to the desktop area?

That is some sort of video failure. "Unable to initialize video (to display the post code)"

Hi names Rui, i question for you does your PC give a beeping sound when you turn it on? if does can you tell me how many beeps it gives?

if it give a designated number of beeps this might be the problem i will give you a chart so you can differentiate the warning beeps you hear.

warning beeps:

1 Short Beep DRAM refresh failure
2 Short Beep Parity circuit failure
3 Short Beep Base 64k RAM failure
4 Short Beep System time failure
5 Short Beep Process failure
6 Short Beep keyboard control gate A20 failure
7 Short Beep Virtual mode exeption failure
8 Short Beep Display memory read/write test failure
9 Short Beep ROM BIOS checksum failure
10 Short Beep CMOS shutdown read/write error
11 Short Beep Cache memory error
1 long, 3 short Beep Conventional/Extended memory failure
1 long, 8 short beep Display/Retrace test failed

hope this will determine the problem if none of this warning beep is heard try reseting the power botton in you PC cause sometimes the power botton will loosen cause of continuous use of the botton.

hope this will help you.

The beep codes indicate you probably have a dry joint on your GPU. A reflow should fix it. if you don't know what a reflow is, it's probably not in your skill set, here is a page with a video to show you how it's done. good luck.

Disconnect all devices from the power supply EXCEPT the motherboard
Remove any extra cards including video etc.(plug monitor into the onboard)

If you hear any beeps these can indictate where the fault is.
either of these sites below will help you further with that

Beep codes Pc

More beep codes

Power up the pc and see if the fans are working.
If not then double check the power connections to the board.

If you still have no fans it is time to suspect the power supply as the probable cause.

If the fans worked then you should have gotten a display which told you there was an error and offering you a chance to go into the BIOS. ignore it and shut down the PC.

Now connect one drive only and boot again.

Repeat that until you identify the component that is giving you a problem.

Once you find the problem then remove or disconnect and carry on with the rest to see if another component might also cause a problem

If there is only one problem device then you may want to investigate that device further, Unless you don't mind replacing it
Hope this gives you the information you need

Hope this gives you the information you need

Bob
Moderator

It would be very decent of you to consider the quality of our experts answers and judge them accordingly as you pass through FixYa.

Thank you

Depending upon your BIOS manufacturer, generally this POST error code means either a video card problem or a motherboard problem. If the RAM is OK then you have a motherboard problem, and this may not be cost effective to fix. Consider putting your money towards a new laptop, remove the hard disk and put it into an external USB adapter case and use it as an USB hard drive for backup etc.

Indicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional information
This issue can be caused by any of the below situations.

1. New hardware conflicting with old hardware.
2. Bad or failing hardware device.
3. Connections not connected or connected properly.
4. Recent electrical storm that caused a surge that damaged computer.
5. Other hardware issue.

3 beeps generally means video problem,
first check this site to see if your notebook qualifies for extended warranty service

This website:
http://www.pchell.com/hardware/beepcodes.shtml

Lists standard beep codes for computers. The one long, followed by two short beeps indicates a display problem according to the site.

I have heard other people say that the same beep codes specify a RAM problem.

Have you recently installed any new RAM or a new graphics card, or made changes to either.

It seems likely to be the graphics card because of the missing info on the screen. Usually when RAM is bad there is something on the screen.

well, try hooking it up to an other screen and see if it boots up,if it does your screen has taken a flop if it doesn't your viedo card is gone. lala linda

y have ram problem .................try a new ram........

i m 100% sure u r problem is solved now.....
enjoy

dont forget to tell me u r problem solved or not
best regards & best of luck..