DV9774 no image, just backlight.

DV9774ca Windows 7 32bit worked fine for casual use and worked perfect last time I used it a week ago.
Now I'm lost on this one. Went to turn it on from cold yesterday...it powers on, lights all going for power and HDD, Quicklaunch buttons etc. Can hear hard drive. backlight comes on screen yet nothing else ever happens. I power off with button and reboot and still nothing, just backlit screen only.

Then only once after removing power and battery and holding the power button for a while to drain it, I put the power back and it booted, then I got something!..but told me there was an interupted start (probably due to me powering on and off with the power button and blank screen) and do I want to start Windows normal start or do a Start recovery (not quite sure exactly what it said now, something about startup recovery or startup restore). I just chose Windows normally. (windows 7). It started perfectly!!

So I was in Windows for 1/2 an hour in Events to see what had happened and per usual there was no indication, just the usual shutting down succesfully and starts successfully in there. I used it for a short while perfectly and then left to for an hour. When I came back it had gone in to what I assumed was Standby. I opened the lid only to see the backlit screen and couldn't get anything on it.

I held the power button to shut down, reboot to same backlit screen only. Can hear the HDD.

I took out the battery again, etc, held down the power for a while to drain it. Then put it all back and nothing fixed it this time. i tried that several times and gave up.


Thanks.

 

Follow up:

This seems to be the Windows 7 black-screen of death from my research. It was stuck in Sleep mode, so when I held the power button to shut down, it just went to sleep, then when I thought I booted up to the blank screen, it was stuck in some sleep mode. Once I got it going by removing battery and holding power button to drain it then boot up ok so I just set Power Options to never sleep, no screen saver and has been fine.

 

This is probably unrelated, but I wanted to let you know (if you didn't already) that HP has a battery recall for your computer. If you already knew about this, just disregard this message, but I always like to tell people.

 

My battery was not on their list. Thanks.

Anyway I came back because this issue is not solved. I thought I had it fixed. I went to boot it up yesterday and back to the backlighted screen, fan and the Quicklaunch lights and the power light. Nothing else. I even took the battery out and the CMOS battery for 10 minutes (several times) and everything such as swap RAM, etc.

What happens when I press the power is the fan comes on, the lights on Quicklaunch as usual. There is no POST screens what so ever. They would be black with writing on it as it checks stuff. Then theres the HP splash screen on a black screen....well I don't get any of that, just a lighted screen.

When it was working two days ago I had the speakers on. So I know that the HDD is not laoding Windows, theres no sound from the speakers. It does not POST so does not even get as far as to telling the HDD to do anything.

Theres no beeps from the motherboard. I found some LED trouble codes listed at HP for this series Pavilion. It went on about the LED for Cap Lock and Num Loc flash different amounts and then you read the code for them. Mine seems ok...My Cap Loc light do not come on at all, since I had that off. The Num Loc stays on, I had it set to be always on anyway.

My basic question to anyone who has experienced the nvidia graphics failure, could you hear Windows booting in the background still? Because at this point I don't even know whats happened since right from the start theres no POST.

And I plugged an external monitor in the VGA port and get nothing happening...the monitor does not detect any signal.

Thank you for any help.

 

Don't know about yours...

But when I had GPU failure on my dv9035 (which I had reflowed,) windows would still boot. It would beep. Case lights would still light. Backlight on. Just nothing on the laptop screen.

good luck

 

After I typed my last post I turned the laptop on and left the backlit screen on for about 1/2 hour.
Then I went back to it and rebooted and it POSTed ok and boots in to Windows perfectly. Like something got warmed up and now it goes.

 

This laptop is now dead. That trick on the post above to warm it up with a blank screen worked twice and booted to Windows. Next day same thing. Now I press the power to boot and the power button blinks once blue light and nothing else happens.
I won't be doing anything else with this. I have another laptop thankfully, but nice to have had a spare.