Pavilion dv6-3040sa, black screen, flashing caps lock

[56KBs]

Hey all,

In need of some help for a friend, her laptop has had this issue for a while now and only just come to me for help. Her HP Pavilion DV6-3040SA has an odd issue with it, if you power it up the display doesn't come on and the caps lock just flashes, it will continue to flash until the laptop is turned off. On the help section a flashing caps lock does not refer to any particular error.

I've reseated RAM, tried hard resetting, reseated the CPU and it managed to power up, then after it was turned off, it wouldn't power up again and had the same issue, after playing with it some more it powered up and worked for 2 days, when it promptly stopped working again.

Any reason for this issue? 

[Cloud_Strider]

What is the pattern of the caps lock blinking?  Does it blink, blink, pause for 3-4 seconds, blink, blink?  The blinks will be separated by a 3-4 second pause.

One that is often described as continuous blinking is when it blinks one time.  This appears to be a continous blink rather than an interval.  This would be reflected by blink, pause, blink, pause, etc.

What is the exact model of the notebook?

NOTE: Do not provide the serial number.

[56KBs]

It just flashes, pause, flashes, pause, so I assume it's CPU issue, although I find it strange the CPU is sometimes broken, sometimes not.

Model dv6-3040sa
Product WR777EA#ABU

[Cloud_Strider]

Processor failures can be have inconsistently.  I have seen processor failures start with 1-2 second hangs in the OS to working one day and not at all the next. 

The blinking code you have desribed is a beep code of one.  Review the following table found here.

Caps Lock/Num Lock	1	CPU	CPU not functional	Reseat replace CPU. Service
Caps Lock/Num Lock	2	BIOS	BIOS corruption failure	Restore BIOS from onboard backup (jumpers) Service
Caps Lock/Num Lock	3	Memory	Memory module error not functional	Reseat memory modules (see next section). Test memory from UEFI or BIOS. Replace bad memory modules. Service
Caps Lock/Num Lock	4	Graphics	Graphics controller not functional	Service
Caps Lock/Num Lock	5	System board	General system board failure	Service
Caps Lock/Num Lock	6	BIOS	BIOS authentication failure	Restore BIOS from onboard backup (jumpers) Service

The options for a blink code of 1 is to reseat the CPU as you have already done or to replace the processor.  Since the issue returns after reseating the CPU, it looks like the CPU needs to be replaced.  Sorry.  😞

[56KBs]

Thanks for the confirmation, I will swap out the processor when I get it posted back to me, £15 for a used one isn't too bad if it fixes it, I'll leave this as unsolved until I have seen for sure it works if thats alright.

Thanks again,

Matt

[Cloud_Strider]

You are most welcome. 

Let me know what happens once the processor is replaced. 

[56KBs]

Well, the processor change still didn't help, still broken

[Cloud_Strider]

If it is still tripping the processor POST test, then the only component left at this point is the motherboard.

The processor post test is generally correct, but there are small number of cases where it is a component on the motherboard (CPU socket more than likely) and this appears to fall into that category.  I am surprised that it was not the processor. 

Sorry.  😞

[808mma]

Hi I have the same problem but blinks at 2 seconds in between need help

[Cloud_Strider]

If it is blinking with a 2-3 second pause between each blink, then this correlates to the processor POST test.  It can be either the processor or the socket on the motherboard itself that has failed.  It's usually the processor, but it can be the motherboard in some cases.  However, that isn't something that can be identified without a shop to test the individual components.