Screen remain black after switchin on the laptop

First I will suggest you to Return BIOS settings to their default levels. An overclocked or misconfigured BIOS can cause all sorts of random issues, including black screen
After that restart your computer and then press and hold F8 keys until you get Advanced Options menu screen.Use the arrow key to highlight Safe Mode, and then press Enter, your computer will boot automatically to safe mode.
If you able to start in safe mode then update your graphic drivers from the manufacture site of your laptop
Let me know if it helps you.
Use system utility tool like RegInOut to remove unwanted files , fix registry and windows errors which causing black screen

Well looks like your cfl tube is dead or the card powering it is dead. the easiest thing to do is to
find a Laptop repair center, the can change either the backlight tube (like a neon tube really) or the inverter or the whole screen.

You might want to try it yourself if you find a working screen for your HP.
Is is fastidious but not that dificult.

Here you can see a step by step tutorial on how to remove the screen for another Hp model.

maybe a hardware problem, on booting the pc, move the screen to every angle to see if there is a connection problem.
If so, then use your warranty if you have one.

HP Limited Warranty Service Enhancement - HP Customer Care (United ... If you own an HP Pavilion dv2000, HP Pavilion dv6000, HP Pavilion dv9000 or Compaq .... Willthere be a future BIOS release that does not make my notebook fan remain ... Black Screen Error Messages that may Occur During Startup or Boot ...
h10025.www1.hp.com/ewfrf/wc/document?docname...lc=en...

If the laptop appears to boot up but the LCD screen is black, then the problem is a back-light fault caused by either a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instructions to determine the fault and fix :-
http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

have you tried this with the battery removed from the laptop?

Try to attach your computer to an external monitor to see if it is a screen issue or a motherboard issue. If the computer does not pick up on the external right away, try to toggle it by holding down the Fn key and striking F4. If you get a picture on the external, then you have only lost the screen and the motherboard shouyld be fine.

yep ...it seams that you mess with the grafic card ( vga driver ) ..probably on color register ..or some driver update ..and now it wont display image ...
either reinstall the pc ...and its probably the best ...or restore using cd .. cause if it was something wrong with your display ..it should work on the other monitor... it also might be a video card fail ...if after re-installation its the same ...its the video card..
if you are worried for the data on il ...just install windows without formating ...choose to install a new os in the old folder...

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.

hi,
i m in Hong Kong. The stupid HP repair center charged US 90 just for inspection!!!!! They they said the whole motherboard had to be replaced, thts additional US 630 dollars, the thing is just 1.5 yr old. They also said i don get to keep the broken mother board after replacement. This is simply irresponsible, unethical, sleazy and UNJUST!!

Thanks. right now the computer is fixed for US70. when i hv time, i'll open it up and see if i can figure it out how it was fixed. The shop suggested tht the computer wont last too long. This is such bad quality for HP... Sorry, i hv to do the following for other victims to find this easily:
(can some creative netizen bring this to the public light to pressure HP to do the ethical things??)

bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.