Top 20 HP Pavilion dv4000 Notebook Questions & Answers

first off there is no such thing as a DV4, sorry!!!!
dv4-1000, 1280,1300, right?,. it's 10 old, the battery is that old is no good, the dash matters too if present (details do)
or is it a DV4000, 13 years old not 10 .??? why not post the full model and p/n off your PC service tag so i can show you matching manuals to read and follow, ok?


that is blink code, try to learn how to read them , counts them.
here is a list of tests, simple. to harder.
1; Remove that old big battery 10 years old , it shorted.
2: run on AC power only. in fact can do this forever.......
3: next is the fan working? fan is next and now, does it?
4: flash codes, count them and report them, easy no?
5: the coin cell is next , it is 10 years old that too is END OF LIFE
why not replace it too ,now even if good, to avoid problems later, ?

My answers are for DV4000 only not the DV4-1000 and up vast series of laptops. vast versions of them...
the coin cell , HP name RTC battery, all die at 5-7 years old.
yours is well beyond that. ok?
lets do chapter 5 covering just that now.
here it is, pg 5-20 pdf page 126
we take it it out if lower than 2.9v (a dmm meter is cheap)
we replace it, 3.3 is normal when the fall to 2.9 (think cliff)
they fail fast and the BIOS GOES NUTS,
in fact the PC can be totally dead.
see the manual , if wrong next time tell full service tag data.!!!


that caps lock flashing are codes, learn to count them
my wild guess is it is the code for BIOS NVRAM corruption.
the cure is posted here over 1000 times.
and a million times at real, we are not HP.

HP Pavilion... | 599 views | 0 helpful votes

Usually this means u have a damaged led panel or panel ribbon connector try a new LED screen first try ordering from Amazon get the numbers off the back of the screen

HP Pavilion... | 144 views | 0 helpful votes

got nothing?, (means PC is dead or just key buttons dead)
tell what works and not, we can not watch you or it. please
DV4000 is a series of LT. it has a full & real model stated on its service tag, only THAT works,

so how'd it get w8? there? (bought FROM MS or HP?????)

why mess with BIOS> ? if this fails it bricks the PC.
(if you must flash always flash using the usb stick way. (freedos)
not only that using the wrong model to flash, HP sold this series with AMD and Intel processors. oops......
next time before doing such big thing ask, hp first?
both model and p/n matter, when doing updates or buying parts.
big time!

learn that HP page, the exact model and OS must be selected
or it shows you the WRONG BIOS and wrong driver and wrong HP APPS. for a fact.

here is the series page, dangerous, imo

use the real page by using real models #

pick any LT. even yours.
the PC can have 6 different network chips used in the long production run.. and GPU and other features, very different.
in your case even the CPU vastly different. amd/intel
so giving that fact, picking the right BIOS binary can be very hard.

best of all why not ask HP before even walking the path.

HP Pavilion... | 41 views | 0 helpful votes

If this is a windows computer, you can look online for a program to erase your current windows password. I found one called Offline Windows Password & Registry Editor. I had to
1. download the program onto a second computer that I could logon to,
2. Burn the program to a DVD or USB stick
3. Go back to the computer I forgot my password on, and turn it off/on
4. As it is turning on, press the F?? key that the screen says to go to the boot menu.
5. Tell your computer to boot to the DVD or USB stick
6. Follow the instructions included with the software to reset your password to blank. Note: Remember what account you login with, so you reset only that account's password.
7. You should be able to reboot your computer, and login without a password.

HP Pavilion... | 75 views | 0 helpful votes

If you want to reset the BIOS password remove the computers battery and then open the backpanel and remove the bios battery for about 20sec. If you want to reset Windows admin password this is harder issue -> easy way make a backup and reinstall windows and then restore the backup.

HP Pavilion... | 127 views | 1 helpful votes

Either the computer came with a recovery disc, or during the boot up at the HP screen thre should be some options. Typically F11 will get you into a recovery partition which should allow you to re-install Windows. This will wipe out any data you have.

HP Pavilion... | 56 views | 0 helpful votes

It could be your wireless card which you can replace through the bottom of the machine. Take it out and get the part number and do a search on amazon for it. It should be fairly inexpensive $5-10 I'm guessing. If that doesn't work I would just get a USB wireless adapter which you can also get from amazon. Good Luck! ROCKSolid Computer Services Livonia NY Rockhopper Technologies

HP Pavilion... | 58 views | 0 helpful votes

If the restore partition is still there, press either F8 of F11 just before boot up and follow restore/rescue links from menu.

HP Pavilion... | 145 views | 0 helpful votes

under Ur Battary u will find ur serial and product key

HP Pavilion... | 72 views | 0 helpful votes

While online, Right click on my computer then go to device mangers click go to audio devices right click then go to update device driver or update driver

HP Pavilion... | 176 views | 0 helpful votes

Raju, Go online through the device managers in your computer and you would get the audio drivers.

HP Pavilion... | 94 views | 0 helpful votes

You may have temporarily turned it off by accident. See the image below, if not reply and I can suggest other things.


HP Pavilion... | 63 views | 0 helpful votes

Generally laptop speakers aren't that loud, plug in an external speaker into the headphone jack for higher volume.

Bottom right of the screen should have a speaker icon to change the volume.

HP Pavilion... | 60 views | 0 helpful votes

need more info

HP Pavilion... | 51 views | 0 helpful votes

you may need to replace the keypad or try cleaning under the keys.

HP Pavilion... | 47 views | 0 helpful votes

There is no way of using the hdd when it is locked. Throw it away and buy a new hdd.

HP Pavilion... | 93 views | 0 helpful votes


HP Pavilion... | 20 views | 0 helpful votes

Its the little watch battery on the bottom of the laptop under the cover.

HP Pavilion... | 202 views | 0 helpful votes

Not finding what you are looking for?
HP Pavilion dv4000 Notebook Logo

1,229 questions posted

Ask a Question

Usually answered in minutes!

Top HP Computers & Internet Experts

Lee Hodgson
Lee Hodgson

Level 3 Expert

4810 Answers


Level 3 Expert

13434 Answers

Muntejaya Ginting
Muntejaya Ginting

Level 3 Expert

10422 Answers

Are you a HP Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

Pavilion HP

  • Pavilion HP

Most Popular Question

hewlett packard hp pavilion dv4 back

  • Computers & Internet