Laptop blank screen flashing led lights

The HP dv7 laptop blank/black screen with the continuously flashing CapsLk & Num Lock led lights is probably indicative of an overheated graphics processing unit (gpu) on the system/mother board. On the one that I am trying to repair it is an ATI gpu. The gpu is built into the system/mother board.
If laptop gpu is failing then the blinking diagnostic code of the CapsLk & Num lock led lights blinking once would seem to apply. Why even though led lights are flashing continuously? Because the laptop boot tries to load through the gpu via the cpu and fails which thereby triggers the one flashing light then it retries flashing the light again (and again and again continuously). As other posters have commented HP did not seem to care about a design flaw so they hesitate and ignore that fact – they will often tell you that the system/mother board needs replacement. As a matter of record you can see another thread (http://h30434.www3.hp.com/t5/Notebook-Hardware/Blinking-caps-and-num-lock-lights/m-p/29560#M3853) that has 19 pages of posts with over 230,00 views – unfortunately it has been deemed read only by the HP forum now.
I would refrain from an exact duplicate replacement motherboard without proof that the gpu has been corrected on the replacement board. Ebay has a number of replacement system/mother boards that are less than the over $300 price that HP has quoted for the repair. There has even been a listing for an upgraded board that deals specifically with the gpu issue. If the laptop has 17” monitor like the dv7 it may be very well worth replacing the system/mother board.

I have a little more to add
If I turn it on normally, nothing happens on the memory stick (no lights or anything)
If I turn it on while holding down Windows and B, the memory stick turns on after about 15-20 seconds, the light flashes for about 5 seconds then it stops flashing, it just sits on a solid light.
Its almost as if it is searching the memory stick for the files but fails to find them.
I used sp65000.exe to create the recovery stick

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Pavilion dv6 blank screen caps lock light on blinking F11 F12 light on (red)

pavilion dv6 blank screen caps lock light on blinking F11 F12 light on (red)

Hello kiranreddy,
Welcome to the HP Forums.
It appears that your Notebook is not starting, that you have a blank screen and flashing LED's. I will try to help you with this.
I would like you to start with this document: Computer Does Not Start and the LEDs Blink or the Computer Beeps. This will help to try to identify if the Notebook is providing an error code. If it is, it will also provide steps to attempt to resolve the issue.
Please let me know how you make out with this. If you require further assistance with this please provide the Model and Product numbers for your Notebook. (How Do I Find My Model Number or Product Number?)
Thank you for posting on the HP Forums.
I worked on behalf of HP.

Blank Screen Flash at Preview & Publish

After capturing "live video" for my captivate 3
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My friends MBP died the other night. He put it on sleep mode one night and the following morning, and when he went to turn it on the following morning it would't. Only a black blank screen and blinking lights. There is no sound or anything. BTW it is a mid-2010 MBP, no added hardware, everything stock. It wasn't custom configured, and I believe he upgraded to Lion earlier this year. I read somewhere that depending how quickly the lights are blinking could indicate a specific problem. Is this true? He is planning on taking it an Apple store, but figured we would try here first since it is a bit of a drive, and the warranty has expired. Any help would be greatly appreciated. We are just trying to get an idea of what we are dealing with. Thank you!

Looks like hardware problem.
Apple can fix it. Take it to Apple as soon as possible.
Mac start up seq:
http://support.apple.com/kb/HT2674

Unable to boot laptop, blank screen, even no HP logo is seen

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Hi,
You can follow the steps listed in the below link and could you mention the complete product number & model number of unit.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443371&tmp_task=solveCategory&cc=us&dlc=en&lc...
"I work for HP."
Please click the "White Kudos" star to say thanks for helping.
Please mark "Accept As Solution" if my help has solved your problem.

Bootup Blank Screen - caps lock light and wireless light only keep blinking

Hi
My HP compaq 420 was frozen, last night I forgot to shut down then when I press power button no display, fan keeps working and Caps lock light is kept blinking
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Hello kiranreddy,
Welcome to the HP Forums.
It appears that your Notebook is not starting, that you have a blank screen and flashing LED's. I will try to help you with this.
I would like you to start with this document: Computer Does Not Start and the LEDs Blink or the Computer Beeps. This will help to try to identify if the Notebook is providing an error code. If it is, it will also provide steps to attempt to resolve the issue.
Please let me know how you make out with this. If you require further assistance with this please provide the Model and Product numbers for your Notebook. (How Do I Find My Model Number or Product Number?)
Thank you for posting on the HP Forums.
I worked on behalf of HP.

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Dead MacBook : nothing on screen , flashing status light (6 times)

Hello
My Dad has a MacBook (early 2006) which worked flawlessly until it did not boot one morning.
Now he has a black screen, nothing when powered up except, if you maintain power pressed, 6 times flashing status light.
- Restoration CD did not do anything because it could not load (CD doesn't eject, has to use the "business card in the slot" trick to eject the disc).
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clementjoubert wrote:
Hello
My Dad has a MacBook (early 2006) which worked flawlessly until it did not boot one morning.
Now he has a black screen, nothing when powered up except, if you maintain power pressed, 6 times flashing status light.
- Restoration CD did not do anything because it could not load (CD doesn't eject, has to use the "business card in the slot" trick to eject the disc).
- All resets did not do anything (power button for 5 secondes with no battery or power cord, cmd + option + p + r either)
- Could not run diagnostics
- Apple certified repair center saif motherboard is fried, costs the price of a brand new MacBook to change it.
Do you have any idea about what happened ?
Do you know how to reset something ?
Do you know what those 6 flashes mean ?
I read restoration CD can be used while status is displaying 3 short flahes, 3 long flashes. Does it work on a dead MacBook ?
Thanks a lot in advance everyone !
Sounds like a simple dead motherboard, there's no better explanation than that, I'm afraid. If you didn't get AppleCare, then you're out of luck.

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Hi i have a 8520 that dint want to start. so i proceeded to try and reinstall the software.
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Thanks!

Hi and Welcome to the Community!
I recommend you first prepare with these steps:
1) Make sure you have a current and complete backup of your BB...you can find complete instructions via the link in my auto-sig below. In your situation, this is moot.
2) Uninstall, from your PC, any BB OS packages
3) Make sure you have the BB Desktop Software already installed
http://us.blackberry.com/software/desktop.html
4) Download and install, to your PC, the BB OS package you desire:
http://us.blackberry.com/support/downloads/download_sites.jsp
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5) Delete, on your PC, all copies of VENDOR.XML...there will be at least one, and perhaps 2, and they will be located in or similarly to (it changes based on your Windows version) these folders:
C:\Program Files (x86)\Common Files\Research In Motion\AppLoader
C:\Users\(your Windows UserName)\AppData\Roaming\Research In Motion\BlackBerry\Loader XML
Now, use these tricks:
KB10144 How to force the detection of the BlackBerry smartphone using Application Loader
KB27956 How to recover a BlackBerry smartphone from any state
http://crackberry.com/blackberry-101-lecture-12-how-reload-operating-system-nuked-blackberry
If any suggest an update website, please substitute the Desktop Software and/or LOADER.EXE.
Good luck and let us know!
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
Join our BBM Channels
BSCF General Channel
PIN: C0001B7B4 Display/Scan Bar Code
Knowledge Base Updates
PIN: C0005A9AA Display/Scan Bar Code

Satellite P10: black screen - only LEDs light

My laptop has given me some problems:
Problem 1 = doesn't recognise ANY blank dvds so i can't burn
Remedy - bought an external drive
Problem 2 = usb ports stop working even though the troubleshoot says thier all fine, searched numerous boards & followed various procedures but none works
Remedy - only able to buy & use firewire compatible devices
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When i start up my leds are lit up & the fans running but my screen is pitch black!
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Are thier any techies hear that can offer any advice?
It would be much appreciated!

Its very sad to hear that
Problem 3 seems to be an Fl-inverter or display malfunction.
Did you try to connect the external monitor to the notebook?
Check if something will appear on second monitor and use the FN+F5 option for switching between the displays devices.
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Laptop Black screen flashing Caps Lock

Hello. I have a HP ENVY 17-j130ea which i purchased a couple of weeks ago and decided to put a mSATA SSD in there for the cache drive.
I installed the mSATA drive, but when i put it back together i forgot to put the HDD in.
When I turned it on it came up with a message saying there was no OS installed then the screen went blank.
Now when i try to turn it on with or without the mSATA or HDD in, the screen stays blank and the caps lock blinks twice every three seconds.
I have tried leaving it for 5 minutes, I have unplugged it, taken the battery out and held the power button down for 1 minute, I have made a bios recovery key and turned it on with the 'Windows' and 'B' button held down and it does the exact same thing every time.
TLDR; I put a mSATA drive in my laptop and it is giving me a BIOS error and no matter what I do, I am unable to fix it.

I have a little more to add
If I turn it on normally, nothing happens on the memory stick (no lights or anything)
If I turn it on while holding down Windows and B, the memory stick turns on after about 15-20 seconds, the light flashes for about 5 seconds then it stops flashing, it just sits on a solid light.
Its almost as if it is searching the memory stick for the files but fails to find them.
I used sp65000.exe to create the recovery stick

Problem: X220 Blank screen + Mute LED

Hi,
Ive got a problem with my X220: From time to time, the screen goes blank and the mute key LEDs turns on.
Its still working, I can start audio playback via hotkey etc, I just dont see anything.
The only chance of getting the screen back to work is to press the mute key.
This is pretty annoying even it only occurs every few hours. It doesn seem to be related to any certain program, sometimes it occures while gaming sometimes while having the x220 idle on desktop.
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Try booting into the BIOS and rock the LCD and see if the screen will go blank intermittently?
Leave laptop in BIOS will have this issue?
*Non Lenovo employee*
I have a Y2P (i5) ... Feel free to ping me if you want me to test some applications with your Y2P if you have the same model. I don't mind keep doing recovery on it if needed .... =)

Blank screen flashing question mark/finder, weird sounds

I read some other discussions about the flashing question mark, and restarting the system with the restore disc, which intend to try when I get home, but it is also making clicking sounds. When the power is turned on, it sounds like the disk starts up, but then clicks about 4 times at a slow even meter, then turns off.Then the screen goes black, it swipes blue top to bottom, then the flashing ?/finder over a file folder appears. Is this indicative of anything worse? Also, I tried holding down the option key during start-up, but all I got was an icon with a circle arrow and another with an arrow pointing right. All I got when I clicked on these was an hour glass for a minute then nothing.
Thanks!

Update on the problem: Took the computer to the Apple store and the Mac Genius was very helpful. I got mad for a second when he told me that it is policy for warranty items to be UPS delivered for service, all expenses paid by Apple, if you are 50 miles outside the radius of an Apple store. I specifically asked the Apple care customer service person about this before going to the store, and I was told that they only allowed laptops to be shipped in. They probably prefer to sell me something else to allow that. Back to mac genius: luckily, I brought my external hardrive, something I probably would have been told to do if I had paid for Apple care and was able to talk to someone, which the tech people will install Tiger on, run a disk repair program to try to salvage the data on the harddrive, and then drop to the external. If not, data is lost. Either way the harddrive is indeed kaput and will be replaced under warranty.
I called Apple care again and walked through the whole scenario with a rep (not disclosing the info from the mac genius) and she agreed that if I had bought Apple Care, I would have had to go through the exact same excercise. So, phone support is a rip off - the forum is way better. I will be buying the extended warranty, though, due to obvious fears for future problems. Dollars to donuts the red carpet will get rolled out for the next problem considering I paid up.

Z30 not boot: no screen, not led lights, nothing...

Hi,
I can't believe this is happening to me. it's mt 4th blackberry, but something like that never happened before.
I have z30 for a year now.
today, after finished a phone call and starting a new phone call, the phone calls app stop responding. so I decided to restart my phone.
I did a restart (with the menus) and the blackberry stuch on the white blackberry logo. I tried a several times, with charger without charger, I pressed a 5 seconds on the power menu to get it restart over and over and the same result.
after the red light the blackberry white logo appeared on the screen and that's it. I waited an hour, but it's just stuck there.
I didn't install any new apps lately.
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it's failed right at the beginning. It's look like when the red light appear it connected to the pc and when the blackberry logo appear it's disconnected from the pc.
so I thought to make an os upgrade. I just don't care anymore about my data, just to get the phone work again.
so I downloaded a new os version from here and it start ok. detect the blackberry, start to load the image and the about 30% it says "failed to load image" and that's it.
the blackberry now dont even start. no lights when pressing the button, tried to reinstall the os upgrade, nothing....
is my blackberry z30 is dead?
can I do something to fix it? buy a new motherboard or something?
thanks for your help...

My opinion its just a bad luck. Hardware parts can start to malfunction.
My Toshiba notebook has been running since 6 years without any troubles.
My parents bought an notebook from another manufacture. After two days the motherboard died. Simply bad luck it was pity but the dealer replaced the faulty unit and since then it runs ok.
Mostly its not matter what notebook you would purchase. Such issues may happen simply.

Laptop blank screen flashing led lights

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