Screen doesn't launch - caps lock & num lock are blinking

Hello,
my hp pavillion dv4 screen can't launch
my laptop is the same like this
i readed more than one article here about the problem
but i couldn't locate it,
i readed this article
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443366&cc=us&dlc=en&lc=en&jumpid=reg_R1002_US...
and tried to clear dust, and reset power but also did't succeed
so my caps lock / num lock are blinking together once every about 4 seconds and continuos (never stop)
also i can hear the sound of vans getting lower after just 1 second from pressing the power button
so how can i fix this
i can record my problem as a video if you need this
thank you,
Sayed

You provided a link to the HP provided troubleshooting document. Read what the document says and troubleshoot it just as it says. Post your results here.
Best regards,
erico
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My hp pavilion dv4 screen wont turn on but the cap, and num lock blink

My Hp pavilion dv4- 2145dx and my laptop screens stays black but the key board stays on like the caps lock and the number lock, the mouse, volume, and the wifi light they all turn on and so do the fans but the caps and num lock blink every second at this point i dotn know what to do can anyone help

Hi,
First, try a Hard Reset as follows.
Shut down the notebook, unplug the AC Adapter and then remove the battery. Hold down the Power button for a full minute. Re-insert the battery, plug in the AC Adapter and see if the notebook will start.
If it still doesn't start, is there a sequence to the 'blinks' that you can match to the table below?
Regards,
DP-K
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Hp probook 430 6 blinks times at Caps and Num lock.

My Pc do start but I cant see the Hp logo and The Fan goes full speed but black screen the Caps lock and Num lock Blinks 6 times Tnx for help

Hello afamefrjweortfj,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I have read your post on how your notebook computer spins at full speed, that the screen is black with the Caps and Num Lock keys blinking, and I would be happy to guide you towards a resolution!
I am sorry, but to get your issue more exposure, I would suggest posting it in the commercial forums, since this is a commercial product. You can do this at:
http://h30499.www3.hp.com/t5/Notebook-HP-ProBook-EliteBook/bd-p/bsc-274
I hope this helps!
Regards
MechPilot
I work on behalf of HP
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Caps and Num lock blinking indefinitely

Hey everyone.
My brother just encountered the infamous startup error on his dv7-2045eo with blinking Caps and Num lock, but they are not blinking 1, 2, 3, 4, 5 or 6 times. They just continue to blink. What exactly does that mean? Other than that, it's just the regular startup error thing with black screen. We've tested the power supply, and it's just fine, so it shouldn't be a power issue.
The hard drives are also okay.
Any ideas?

Follow the troubleshooting on this HP web document.
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Caps Lock/Num Lock LED blinks 5 times on bootup - HP ProBook 6450b

Hi all members/pros, I was tasked to resolve a bootup issue on a HP ProBook 6450b and did managed to get it up and running again without much effort. The notebook Caps Lock/Num Lock LED flashes/blinks 5 times and then pauses and blinks again 5 times. Seeked assistance on online HP support(link below) and it stated that it was a System board failure. http://support.hp.com/us-en/document/c01732674 So then I opted to swap the hard disk tand LCD monitor hardware with with another HP ProBook 6450b which is functional but display damaged as the user was a senior manager at where I worked - Boroko Motors, Papua New Guinea - and prolong downtime was not an option. Just as I was about to get under the hood, the buggered notebook deciided to spring back to live loading onto the Windows login screen. I noiced also that I was in our server room(with much cooler temperature) that may have aided the componenets on the main borad to function so I presumed the cooling system was at fault. I then got under the hood and confirmed that the fan/vents were clogged up with dust/debris which might have collected over time. Did the cleaning and after that it hasnt failed so far... Thanks all! Get the HP ProBook 6450b service manual here: http://h10032.www1.hp.com/ctg/Manual/c02760808.pdf

I, recently, bought a 6735b hp laptop for $100. It does the same thing as your describe. I think the motherboard overheated. So, I ordered a new motherboard from getcomputerparts.com out of China to see if it will solve the no boot problem. I'm hoping this will solve the problem. I noticed that when I first got the laptop, second hand, that the fan wasn't blowing out, and later found a lot of dust that simply blowing it out solved the air circulation problem. I think that the heat destroyed some connections to the video or hard disk drive controller chip which made my hdd light blink on and off every second or so, and also made my Optical Drive seem to blink its LED on and off, and a slight scratching sound every second, as well.
I also, saw on Youtube.com, a video about the nvidia video chip getting connection heat damage at the solder joints, and there was a way of putting a penny with heat sink paste after 'burning' it for a couple of hours with a hot spotlight lamp with aluminum foil around the rest of the board to protect the rest of the board other than the video chip. But, this was on another hp product that failed after 1 year, no screen no POST.
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Opened up the lid on sleeping laptop and had nothing but a blank screen and blinking caps and num lock lights. I finally got vista restarted after turning it off and on a couple of times. Everything seems to be working, however the caps and num lock lights are still blinking every 2 seconds. Any thoughts on what is causing this?
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Hello,
The blinking caps and numlock are a diagnostic feature of the Dv7 Notebook ( and others ). Depending on the combination it can be a number of different symptoms. They can be as minor as the battery having an insuficient charge or as serious as a CPU failure. I would recommend updating the ROM BIOS on your unit to ensure you have the latest fixes.- Make sure you have the latest one for your model - Here is a link to a document on the Blink Codes.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443366&cc=us&dlc=en&lc=en&jumpid=reg_R1002_US...
regards,
I am an HP employee.
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Caps lock Num Lock sign

Hi
I have a Toshiba all in one and I am getting the Caps Lock, Num Lock signs hanging in the middle of my screen. When I reboot it can be moved to the bottom of the screen but after a while it just stays in the centre of my screen which becomes very annoying.
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I tried to attach an image but this site will not allow me to.

Refer this : http://www.mytoshiba.com.au/support/items/faq/694
Arnav Sharma | http://arnavsharma.net/ Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading
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CAPS and num lock?

hi all,
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1) What CPUs can I interchange in the dv4-1222nr? It comes with the amd rm-72
2) won't boot - fan powers up then powers down, then waits approx 12 sec, then caps lock & num lock flash approximately every two seconds. I interpret this as repeated flashing of one, but it keeps flashing.... diagnostic document says it's supposed to repeat only 6 times.
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Hi,
This book shows you CPU's supported from day 1:
h10032.www1.hp.com/ctg/Manual/c01597750.pdf
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BH
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Welcome to the forum !
There are several free third party applications that will accomplish the same thing. Basically the application loads at Startup and places indicators for the Caps Lock and Num Lock down in the Tray or on your Desktop.
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Owner & Operator of the following:
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● IBM Thinkpad T-23 w/ Win XP ● IBM Thinkpad T-22 w/ Win XP • As well as multiple desktops dual/triple booting XP, Vista and Win 7.
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When I return to my desktop after the macbook has been put to sleep sometimes the CAPS LOCK / NUM LOCK are activated on keyboard. Actually it's not activated, it is only the small green dots on the keys that shine, however when typing anything it's not in CAPS.
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sorry for this dubblepost. Anyway please answer my question
Message was edited by: sebrock

Caps lock num lock blinking 4 times

My hp pavilion dv4-2145dx will not boot up, the screen is dark, the fan is running and the
Hard drive works. The number lock and caps lock led's are blinking simultaniously 4 times, then there is a pause and then they blink 4 times again. Does anyone know how i can fix this problem?

Hi
4 blinks indicates Graphics Card or Graphics Controller issue. It is a hardware issue.
Troubleshooting LED Blink Codes or Beep Codes During Startup or Boot
In notebooks graphcis cards are mostly integrated..so motherboard replacement may be required.
If the system is under warranty then you can call tech support or otherwise you can check in HP Parts store for spare parts.
Note:
If you have HP Support Assistant installed on the computer(The Blue Question Mark) then open it ==> Complete all pending Updates & Tuneups==> Restart and Check. It may solve your problem
Although I am an HP employee, I am speaking for myself and not for HP.
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Message was edited by: Carolyn Samit

HP Laptop. Blank screen and caps and num lock lights flashing.

Hi,
I hope you can help me.
My laptop is the HP Pavilion DV6-1216sa, bought new in September 2009. When I turn it on, I get a blank screen, the fan is working and the wifi, volume and mute lights light up. The caps lock and num lock lights flash together, once everyone 3 or 4 seconds. Normally when this happens (it has happened throughout the life of the laptop), I turn it off and turn it back on, and it works again. However this time, the problem persists. I've tried most combinations to get the bios screen up and I've tried getting it to another screen via hdmi and VGA, but no signal received. I have tried everything recommended by the HP support website. I have checked the battery, ram, and hard drive.
Best regards,
Jay

The best cheapest fix is if you can remove the motherboard your self and send it to a refabricator who will check all the chips on the motherboard and reball the bad ones. Cost is about $60-120, closer to the bottom if you can ship them just the board but if necessary they will take the whole laptop and remove the board for you.
eBay auction for repair motherboard only
disassembly included auction
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Screen doesn't launch - caps lock & num lock are blinking

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