HP Pavilion DV7-1245DX No boot/POST, Caps Lock and Num Lock lights blink once repeatedly

[ksw12]

Been through this too. HP offered no viable solution. They have declared this machine obsolete. Further they offer no repair or parts. My solution was to write complaint letters to CEO Meg Whitman. It took six months of letter writing and countless hours on the phone before some compensation  was forthcoming. 

You can waste time and money attempting various advertised repairs (reballing/reflowing) which are short term effective at best. The fundamental problem is a defective desirgn and/or manufacture, manifested through too much heat,too little cooling, and an unfortunate combination of a specific brand of cpu and gpu.

There you have it. Good Luck!

[Memz]

unfortnnately this hasnt worked for me but htam you for posting this....

[Manuzziman]

Temporally solution for our dv6: start the laptop - (caps lock and num lock blinking, fan working)

wrap it into a blanket. Within half an hour it will turn off due to overheating.

Let it cool down and switch it on: it boots again... and is working for a couple of days.

[ffoxx]

Can you tell me the contact info of the tech guy in Redwood city?

[munzamy]

Do you have same issue ?

[Splycers]

This is correct. We receive these from time to time. After tearing down the DV7 we revert to the AMD GPU in the event the LCD monitor is not working correctly or at all. The machine will stay running with all warning lights on. Caps and Num will flash repeatedly. After reflowing the GPU and bare assembly we see that the LCD is now responding and will boot to BIOS. However, this machine will shut down after a few seconds. Maybe 15 seconds or so. We can get to the bios or we can choose to boot from hard drive. No matter where the board goes for information it will shut off and restart to a black screen.  Only after discharging the board or pulling the cmos can we recreate a live LCD and to shutdown. So at this point we began to look at a few factors.

Is the power button damaged or broken: In a stuck state?

We jump started the board to leave the power panel out of the equasion: No go

We know its not the panel.

Is there an issue directly from the Power Supply?

We checked the power supply connections along with the wire we were given to see if there was any damage. Tested without battery: No go

We charged a fresh battery and connected the device without direct ac power supply: No go

So we know its not any of the power supplies.

We tested for anomolies in the memory and also tested any external monitor issues.  Inserting one stick at a time:

No go

At this time, I think its safe to say we have hardware failure on the mother board. 

If you have access to the board, I would like to know the date on these boards in question.

JBK00 LA-4091P / Rev: 1.0

2008-06-04

Made in China <-- isnt everything?