Black screen with cap lights on no boot and no bios

hp.com
the manual there those blink codes.
dv4 is only the prefix model number not full
full matters most and product ID.
all those failed now for bad CCFL back lamps. and more
take out the big battery (dropped out)
hold power button for 10second on AC power pack only.
get screen HP splash? and BIOS pages work?
get bios working first.
2008 PC, the CCFL laps die at 20,000 hours. 10hr/day used.
there are 7 blink codes
blinks codes changed on April 2015
so yours are old
and documented endlesslly at hp.com and asked more at their forum.
here

https://h30434.www3.hp.com:443/t5/Notebook-Boot-and-Lockup/HP-Laptop-Error-Blink-Codes/m-p/6142972


1=cpu
2=bios corrupt
3-memory fail ddr.
4- GPU graphic
5- main mobo problems.
6- BIOS checks fail, CMOS battery dead?
endless blinks no pattern is power pack bad or overload
wrong pack or huge battery shorted

step one, big battery out? skipped that?
step 2, a good power pack , that means 19vdc on those 2 pins.
bingo BIOS screen now work ,yes?
step 3, try an external VGA screen at the P15 VGA jack there
screens work now (BIOS first) yes/no?

remove DVD, drive
and all USB devices
there booting with only 1 memory stick. (got more?, try each 1 by 1)
black screens of *****'.

the lack of flash codes, Implies Power pack is dead. or CPU overheated, and selfshuts down. that fan going dead tells
me the power park is dead.

http://pcdied.com/#black-screens

If the computer is turning off on its own then it is most likely a burnt out processor.

Insert the original Windows CD-ROM into the DVD-drive, and see if the computer will "boot" from that disk. If so, then it could be your 'C:' drive which is having the problem, and thus not "booting" your computer from it.

The AA1 has a built-in BIOS recovery routine, which makes it possible to flash the BIOS even if it doesn't POST and the system doesn't boot anymore. It's meant for emergencies and is also known as crisis disk mode. Use at your own risk.

First format an USB flash drive with FAT.

Download the latest BIOS, and extract all files from the zip file. Put both FLASHIT.EXE and the BIOS file with FD suffix in the root directory of the drive. The files must not be in a folder. Rename the BIOS file toZG5IA32.FD, that's important.

Turn the AA1 off, with the USB drive still connected, and make sure both battery and AC adapter are also connected.

Press Fn+Esc, keep it pressed and press the power button. Release Fn+Esc after a few seconds. The power button starts blinking at this point. Press the power button once. The AA1 will now initiate flashing the BIOS, do not interrupt it under any circumstances. After a while the power button stops blinking, and the AA1 reboots shortly after. Wait patiently.

The BIOS has been re-flashed and all settings are reset to default.

If the AA1 doesn't reboot by itself, but the power button still blinks, wait a few minutes before turning it off, and try again.

i have this problem 2 days ago.. and this works on me... maybe on your's too you may need to flash your bios. why need to flash the bios.. ? 1. had the black screen of death. or deleted the bios how to flash the bios: STEP 1.download the AA1 BIOS from this link: http://www.acerpanam.com/synapse/data/7117/documents/AS1_BIOS_3309.zip 2. extract the file 3. rename the file 3309.fd to zg5ia32.fd 4. put zg5ia32.fd and FLASHIT.EXE onto the usb drive now, start the process STEP 2 A. make sure the power cable is in B. the laptop is turned OFF C. Plug the usb stick in! STEP 3: Press and HOLD down the FN and ESC key together then press the power button, while holding the buttons release the power button and continue holding FN and ESC for about 5 seconds release the buttons and the power light will start to blink let the laptop run and DO NOT PRESS anything this can take upto 8 mins when it's done the laptop will restart. this works on me... good luck.. and i hope it will help you.....

i have this problem 2 days ago.. and this works on me... maybe on your's too

you may need to flash your bios. why need to flash the bios.. ? 1. had the black screen of death. or deleted the bios



how to flash the bios:

STEP 1.download the AA1 BIOS from this link:

http://www.acerpanam.com/synapse/data/7117/documents/AS1_BIOS_3309.zip

2. extract the file
3. rename the file 3309.fd to zg5ia32.fd
4. put zg5ia32.fd and FLASHIT.EXE onto the usb drive


now, start the process

STEP 2
A. make sure the power cable is in
B. the laptop is turned OFF
C. Plug the usb stick in!

STEP 3:
Press and HOLD down the FN and ESC key together
then press the power button, while holding the buttons

release the power button and continue holding FN and ESC for about 5 seconds
release the buttons and the power light will start to blink
let the laptop run and DO NOT PRESS anything this can take upto 8 mins
when it's done the laptop will restart.

this works on me... good luck.. and i hope it will help you.....

i have this problem 2 days ago.. and this works on me... maybe on your's too you may need to flash your bios. why need to flash the bios.. ? 1. had the black screen of death. or deleted the bios how to flash the bios: STEP 1.download the AA1 BIOS from this link: http://www.acerpanam.com/synapse/data/7117/documents/AS1_BIOS_3309.zip 2. extract the file 3. rename the file 3309.fd to zg5ia32.fd 4. put zg5ia32.fd and FLASHIT.EXE onto the usb drive now, start the process STEP 2 A. make sure the power cable is in B. the laptop is turned OFF C. Plug the usb stick in! STEP 3: Press and HOLD down the FN and ESC key together then press the power button, while holding the buttons release the power button and continue holding FN and ESC for about 5 seconds release the buttons and the power light will start to blink let the laptop run and DO NOT PRESS anything this can take upto 8 mins when it's done the laptop will restart. this works on me... good luck.. and i hope it will help you.....

TRY THIS AGAIN............ i have this problem 2 days ago.. and this works on me... maybe on your's too you may need to flash your bios. why need to flash the bios.. ? 1. had the black screen of death. or deleted the bios how to flash the bios: STEP 1.download the AA1 BIOS from this link: http://www.acerpanam.com/synapse/data/7117/documents/AS1_BIOS_3309.zip 2. extract the file 3. rename the file 3309.fd to zg5ia32.fd 4. put zg5ia32.fd and FLASHIT.EXE onto the usb drive now, start the process STEP 2 A. make sure the power cable is in B. the laptop is turned OFF C. Plug the usb stick in! STEP 3: Press and HOLD down the FN and ESC key together then press the power button, while holding the buttons release the power button and continue holding FN and ESC for about 5 seconds release the buttons and the power light will start to blink let the laptop run and DO NOT PRESS anything this can take upto 8 mins when it's done the laptop will restart. this works on me... good luck.. and i hope it will help you.....

That is a problem of BIOS. U need to reset your BIOS.
Acer Aspire One BIOS Recovery
The AA1 has a built-in BIOS recovery routine, making it possible to flash the BIOS even if the system doesn't boot anymore. It's only meant for emergencies and may void your warranty, so use at your own risk.

Follow every step carefully!

First format an USB stick with FAT.

Download the latest BIOS, and put both FLASHIT.EXE and the BIOS file in the root directory of the stick. Rename the BIOS file to ZG5IA32.FD, that's important. Do not remove the USB stick.

Turn the AA1 off, make sure both battery and AC adapter are connected. Press Fn+Esc, keep it pressed and press the power button to turn the AA1 on. Release Fn+Esc after a few seconds, the power button will be blinking. Press the power button once. The AA1 will now initiate the BIOS flash, do not interrupt it under any circumstances. After a while the power button will stop blinking, and the AA1 will reboot shortly after. Wait patiently.

The BIOS has been flashed and all settings reset to default.