power cord not recognised

[coder3]

I have the exact same problem right now too. My laptop also does not recognize my power cord. 
However, when I turn it off and leave it plugged in, the battery is full when I turn it back on after a few hours. 
But when the laptop is on and plugged in, it looks as if it is not plugged in and functions of the battery. 
Both things accrued at the same time (day before yesterday) AND my laptop is super slow all of the sudden.
Streaming movies is almost impossible, it's so choppy. Regular websites take forever to load and freeze randomly. 
It can't be out network, because all other laptops in our housework just fine. Except mine. 
HOW can this be fixed? I'm not a techy, so please tell me things I can actually do (besides turn it on and off/rebooting).
I ordered a new power cord and battery, they will arrive tomorrow. 
However that doesn't fix that "System board is missing or invalid..." message at start up. 
HELP!!

[Riddle_Decipher]

@coder3 Welcome to HP Forums Community!

I suggest you check the details on this article to find a resolution to the issue with the "system board is missing or invalid" error: Click here for details as that's most likely a hardware malfunction, that said, as for the power cord failure, please get an alternate cable to confirm the cause of the failure, also check with another wall outlet and if possible another power adapter to be sure.

Let me know how that pans out,

If you feel I was helpful, simply click on Accept as Solution to help the community grow,

That said, I will have someone follow-up on this to ensure you've been helped,

Just in case you don't get back to us within 24 - 48hrs, and have a good day, ahead.

[coder3]

The link you provided does ask me to  click on the customer support tab after getting CT number where I will be asked the same but there is no option of or no column where to add CT number what to do next

[Riddle_Decipher]

@coder3 As advised in the article, I suggest you talk to HP support and discuss your options:

follow the below steps to get started:

1) Click on this link - www.hp.com/contacthp/

2) Click on Sign-in or select the product using the below step:

3) Enter the serial of your device.

4) Select the country from the drop-down.

5) Click on "Show Options".

Fill the web-form, to populate a case number and phone number for yourself!

Also, if you are having trouble navigating through the above options, it's most likely because the device is out of warranty, if yes? please send me a private message with the region you are contacting us from, 

here's how private messages work: Click here for details.

[coder3]

There is no option as Countinue as guest in page whose link has been provided 

secondly link for "how to send private message" shows  message access denied 

[Riddle_Decipher]

@coder3 The link has been updated, and so are the details, I appreciate the feedback,

If you need anything else, feel free to get back to us and have a good day, ahead.