Hp Dv6 pavillion 2040ev blinks 3 times

sounds like the black screen of death

a lot of dv hp laptop have this problem the gpu has to reflowed are your keys also blinking. if they are count the number of blinks it will point to problem

HP DV7 Laptop Graphics Fix Black Screen of Death



would not fix it his way

1. huge main battery is shorted,remove it run AC pack only
2. Dv6-3120us,, have CCFL, LCD back lamps and most are dead now, but NO, it has LED 15.6 HD BV LED DV6-30 DISPLAY
3. wrong Power pack used. or weak/bad.;
4. 2010 PC, all batteries are now dead. CMOS RTC 599516-001

https://www.impactcomputers.com/599516-001.html

There are upto 15 more causes
USB device plugged in and short, hdd shorted. dvd drive shorted
and more. ask

Hi, there is a small "watch battery" inside your pc that retains your Bios settings. !!Unplug your PC and hold down the power button for 10 seconds before opening your tower!!! Remove the side panel, locate the battery that's roughly the size of a quarter, remove it for 30 seconds or so, push the power button with it still unplugged and the battery removed. that should remove your troublesome password.
Replace your battery and side panel, plug it back in, and power up... I believe you can access your Bios options for an HP by pressing F11 prior to Windows boot.

those are POST code, error codes, you need to watch time and count them. report them.
leave the battery main out.
does it run ok now? yes/no.? main battery out?.
even new cheap batteries fail easy and hard and short out.
test it with no main battery. it can run on AC power for ever.

are you going to run the COIN cell RTC battery for 10 more years.
it wont make it..
this PC is 10 years old today (can be) so is RTC battery end of life. most fail in 5 to 7 years, says the pink bunny. (and is correct)
the manual shows how to replace it at the real HP Site,
fixya is not hp, not at all.

page 63 shows the way to the RTC

http://h10032.www1.hp.com/ctg/Manual/c01918142


if you power on the PC, and hammer the f10 key]
BIOS runs, its menus;
check the time and date here, if wrong the RTC battery is dead.

read page 3 how.
http://h10032.www1.hp.com/ctg/Manual/c01662442

• old PC have many points of failure (endless it seems)
• does the fan run? is it packed in lint, as all are this old.?
• causing it to overheat?
• RTC coin cell bad.
• main battery bad. (just leave it out until the PC runs right again)
• power pack wires broken, or running real hot.
• HDD going bad,
• windows infected?, no OS stated but avoid XP.

HP caps lock POST blink code page is a horror of horrors
no 2008 listing, to name one flaw (2011 and newer sadly)

https://support.hp.com/us-en/product/hp-pavilion-dv7-1100-entertainment-notebook-pc-series/3756677/model/3807256/document/c01732674



here is a old post at HP, one guy 3 year ago said

LEDs blink 1 time
CPU
CPU not functional
LEDs blink 2 times
BIOS
BIOS corruption failure (RTC coin cell dead)
LEDs blink 3 times
Memory
Module error not functional
LEDs blink 4 times
Graphics
Graphics controller not functional
LEDs blink 5 times (or RTC dead)
System board
General system board failure
LEDs blink 6 times (or RTC battery dead)
BIOS
BIOS authentication failure

Yes! judging by all the cascade break downs, I would suggest replacing the motherboard, HP has a history with motherboard issues.

Hi

Boss you need to mention here in what sequence do the lights blink.

Anyways you can take help from this

Caps Lock/Num Lock LED Component Tested Error Condition LEDs blink 1 time CPU CPU not functional LEDs blink 2 times BIOS BIOS corruption failure LEDs blink 3 times Memory Module error not functional LEDs blink 4 times Graphics Graphics controller not functional LEDs blink 5 times System board General system board failure LEDs blink 6 times BIOS BIOS authentication failure
DO RATE MY SOLUTION

Reset your Printer by following these steps for your Printer Model:

EPSON Stylus Color 900, 980
Pressing and holding LOAD/EJECT and CLEANING buttons, press POWER button, You will see blinking INK OUT led.
Release all buttons.
In 2-3 seconds time press and hold CLEANING button for 10-12 seconds.
EPSON Stylus Color 3000
Pressing and holding PAUSE, LF/FF and DOWN ARROW buttons turn on printer.
Release all buttons.
EPSON Stylus Photo 785, 895
Pressing and holding Maintenance and Roll Paper buttons, press POWER button, You will see blinking Error led.
Release all buttons.
In 2-3 seconds time until led is blinking press and hold for 10-12 seconds Roll Paper button, until all leds will blink.
EPSON Stylus Photo 890, 1280, 1290
Pressing and holding Maintenance and Roll Paper buttons, press POWER button, You will see blinking Power led.
Release all buttons.
In 2-3 seconds time until led is blinking press and hold for 10-12 seconds Roll Paper button, until all leds will blink.

1. Check the adapter
2. Check the processor
3. Check the motherboard if defective replace new one.
Note: You need to know the right spare part number of your motherboard e.i 443776-001. Here's a sample video

VGA card problem..that's what tech told me & changed it 3 times...but still laptop goes off.(exactly like u described)...they finally said need new motherboard??? so VGA will not do this again!!!! I don't know, If I change motherboard...will this happen again...is it worth it??? My pavillion dv 2000 is only 1.5 years old..was expensive??/

Step 1 : Turn off the system by pressing the power button for 5 - 10 sec until the power LED is off. Removed all cables including the power cable (Exclude monitor cable and KeyBoard/Mouse).

Step 2 : Press power button for 5-10 sec again to drain fela power.

Step 3 : Reconnect the power cable at the back of the tower/computer and power on the system.

**If the same problem exists, Call HP tech Support (800-474-6836) because there is a high possibility that you have a bad Motherboard or Power Supply on the system.