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Honor Student
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Member Since: ‎04-28-2011
Message 1 of 7 (18,674 Views)

caps lock and num lock lights are blinking, screen black

I have an HP Pavilion dv4 laptop. I turned on my computer and all of the lights turned on, but the screen remained black. I powered it off but it did the same thing. The caps lock and number lock lights are blinking. It is fully charged. When I plugged it into the charger, the charging light didn't turn on.
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Provost
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Member Since: ‎09-24-2010
Message 2 of 7 (18,629 Views)

Re: caps lock and num lock lights are blinking, screen black

Hi,

 

See if you can match the pattern of the blinking LEDs to the table below.

 

Capture.PNG

 

Regards,

 

DP-K

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Microsoft MVP - Windows Experience

Honor Student
Posts: 3
Member Since: ‎04-28-2011
Message 3 of 7 (18,604 Views)

Re: caps lock and num lock lights are blinking, screen black

Thank you for the chart. It blinks four times so the graphics controller is not functional. How would I go about fixing it? If fixing it is even possible.

Thanks again for the help, I really appreciate it.
Provost
Posts: 36,939
Member Since: ‎09-24-2010
Message 4 of 7 (18,603 Views)

Re: caps lock and num lock lights are blinking, screen black

Hi,

 

This guy has a good reputation for fixing this type of issue - although I don't see a mention of your particular Model range, it may well be worth sending an enquiry.

 

http://cgi.ebay.com/HP-DV2000-DV6000-DV9000-TX1000-Laptop-No-Video-REPAIR-/260674058980?pt=LH_Defaul...

 

Hope you get it sorted.

 

All the best,

 

DP-K

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****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
****I don't work for HP****


Microsoft MVP - Windows Experience

Student
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Member Since: ‎10-30-2012
Message 5 of 7 (14,357 Views)

Re: caps lock and num lock lights are blinking, screen black

I have an indecipherable pattern here that is ever changing (seemingly) 

This is a DV4. Likely not going to fix, but if its something that does not involve buying and replacing the MOBO wouldnt mind getting back to factory spec and selling.

 

Honor Student
Posts: 2
Member Since: ‎12-05-2012
Message 6 of 7 (13,801 Views)

Re: caps lock and num lock lights are blinking, screen black

So I get 2 blinks, then a single blink that repeats every 2 seconds or so... so is that a BIOS/CPU problem and requires a motherboard replacement?

Honor Student
Posts: 2
Member Since: ‎01-29-2014
Message 7 of 7 (5,818 Views)

Re: caps lock and num lock lights are blinking, screen black

I have a DV4...i just replaced the motherboard and i am getting the same thing again? every 4 seconds the caps and num lock light flash one time.  What could it be?

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