HP Laptop fan turns on for a few seconds then turns off. LED blinks once for several seconds.

[Froil]

So my dad gave me this laptop a month ago and have been using it for schoolwork and gaming. Several weeks ago, this laptop suddenly had an HDD failure(it was getting old) and had to get a replacement.

Everything worked fine again, until 2 weeks ago, my laptop suddenly died. No BIOS, No Screen Display, nothing. I see the caps lock key beeping once and checked around online and found out it's apparently a motherboard problem?

I tried every solution online :

• Removed AC Adapter and Battery and pressed power button for 15 seconds
• Removed Memory Modules, cleaning, rearranging them
• Removed CMOS Battery and did another reset, pressing power button for 15 seconds
• Disconnected all components, speakers, trackpad, HDD, only keyboard, fan, and motherboard itself were the only connected ones to power on.
• Removing the entire motherboard, cleaning it, and rearranging everything again

All of these bore fruitless results. The fan powers on then off and the caps lock still beeps once. Is this issue related with the fan itself? Or is it motherboard related?

The only method I haven't tried yet is this thing I found online about BIOS programming chip because the problem could be the BIOS and considering that this laptop was well used since 2016-ish, I think the components might have just gave their last breaths this time around.

I'm still an inexperienced person when it comes to things like this so I might have did something wrong or I may be saying incorrect terms so apologies, and I was hoping I could get an alternative solution here that I could do to fix it before we spend money to get this fixed at the repair shop again..

Any help would be great

Thanks

[WAWood]

@Froil 

First off, forget about the BIOS programming.  Not only do you need the BIOS code and a programming device, you also need the BIOS chip to be socketed to you can remove it and insert it into the programmer.  And in HP laptops, the BIOS chip is soldered to the system board.

Second, as to the problem, it does sound like the motherboard and those are generally NOT replaceable.

And, if you decide to take it to a local shop and they tell you they will replace the motherboard, consider the following issues:

First, HP does not sell new motherboards except for rare exceptions. If you use this link to go to the HP site and do NOT see your motherboard listed, that means HP does not sell it: http://support.hp.com/us-en/product/HP-Pavilion-dv6-6c00-Entertainment-Notebook-PC-series/5191856/mo...

That means any motherboard you buy will be USED, having been taken from another PC. Those often do not work, or have internal problems that the seller does not disclose. So you spend a lot of time disassembling your laptop -- a very risky thing to do -- putting in the replacement motherboard, and then reassembling your laptop only to NOT have it work!

Also, the licensed Windows version that came preloaded on your laptop is an HP OEM Version -- and that license is tied to the original motherboard, not to the PC owner. When you toss away that motherboard, you toss away the license -- and HP will not provide you a second license. Since the versions of Windows you can buy will not activate with the embedded HP OEM license, you will have to buy a Retail version of Windows, and a license to go with it. You will then have to replace the installed Windows version on your laptop with the version you bought and license it. We are not able to assist in any of that work.

The bottom line is the process is a lot more difficult than simply swapping one part for another.

[Froil]

Hi thanks for replying quickly

I would still like to try the BIOS programming method though since this motherboard is presumably good as dead anyways. And I'm willing to spend a BIOS programmer since my older brother has a heck of an experience building computer parts, soldering and desoldering a chip or two from his mobo so I think I can ask for his assistance in handling the BIOS chip.

And if that still won't work, considering if I were to buy a motherboard, would similar motherboards work? I've searched online about my motherboard and I saw similar motherboards that looks exactly like this board. Same location of the connectors, same 3 usb ports, same everything, but intended for a laptop model higher or lower than my model so I'm still wondering if it's compatible, though not intended model.

I have no problem disassembling and assembling this hassle of a laptop. As long as there's something I can do to help lessen the costs. I'd really hope I could save as much money as possible regarding the expenses of this problem.

I'll check the links you sent me later when internet is stable.

Many thanks again.