How do I rest a hppavilion dv4000

Probably a F10 or F11 from boot, possibly another F key, try to read the screen if you miss something reboot it and try again. Otherwise sometimes manufacturers store a Windows System Image and need to be reset via Windows Repair, probably reached by Advanced Options for Recovery.

Hi, you can do a hard rest by following these steps:

Turn off the pc
Remove the cables and the battery on the laptop
Press & hold the power button for 5 seconds
Reinsert the battery and cables to it
Turn on the pc

that is how to do a hard reset....

download the ultimate boot cd and test your hard drive.

http://www.ultimatebootcd.com/download.html

try to repair the windows. insert the windows installer and boot on CD. then choose repair.

The hard disk has died, replace it and reinstall windows using someone's else disk and your key.

do one thing,go to run command and type

"msconfig" then new window is came.go to startup n close all ur starting software b restart ur pc n check it again.

If password appears before Windows starts, will require complete laptop dismantle to remove cmos battery for 1 hour.


If it appears just before Windows starts, go into safe mode and control panel / passwords / remove password.

If its not the backlight inverter or cable. It will be the LCD screen itself. It seems the shop you took it to isn't really up on laptop repair, as this is a common issue I see often. Get on Ebay and find a screen for your model and replace it. I asure you this will fix your problem.

Hi,
Try soft resetting the laptop .
1. Disconnect the Ac adapter
2. Remove the laptop battery
3. Press and hold the power button for 10 seconds
4. Reconnect the power adapter only and power on .
5. If the laptop starts fine , reinsert the battery back



Thanks
Proton

laptop may have crashed, try restore discs.