Is my motherboard dead?

[Material23]

Hello, my laptop freezed once with a black screen after restart it worked like usual but after 15 minutes my external screen got blank again, after unplugging it main screen turned on showing millions of different colors (picture included). I turned off and tried booting once more, capslock with scroll lock started blinking 3 times (after checking codes it shows ram issue). I followed tutorial on youtube - turned off the power, unplugged battery, power cable and cmos batter,  hold power button for 15 seconds, changed memory sticks to opposite site, plugged everything back, boom laptop boots up to windows normally. I waited 2 minutes - everything seemed fine, i pressed windows key and woila, crazy screen with fan at maximum speed again. Now capslock isn't blinking but after hp logo comes out my laptop crash. What can i do?

(Really sorry for my bad English)

 

[KrazyToad]

@Material23

Welcome to HP Community

I have gone through your Post and would like to help

I suggest you try running an Extensive Test on the Notebook to confirm the Hardware Functionality

- Shut down the Notebook completely
- Turn it back on, then tap the Esc key repeatedly until the Startup menu screen is displayed.
- Press F2 to select System Diagnostics.
- Click System Tests, then click Extensive Test.
 

Keep me posted

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.

[Material23]

@KrazyToad Thanks for responding, i did what you said and after a test I've got those messages:

SMART Check : NOT INSTALLED 

Long DST : NOT INSTALLED 

What does that mean?

//Edit1

I tried again later and the quick test started:

SMART Check : PASSED

Short DST : PASSED 

Then i ran extensive test but unfortunately after 5 minutes screen got blank

I waited some time and did extensive test but it ended pretty quickly with colored screen like at first post included photo 

[KrazyToad · Accepted solution]

Thanks for keeping me posted

This sounds like a Hardware issue since the problem persists even outside the Windows ( OS )

I suggest you contact HP Support for Service Options

1) Click on this link - www.hp.com/contacthp/ 
2) Select your product type below.
3) Enter the serial of your device. 
4) Select the country from the drop-down. 
5) Select the chat or get phone number options based on your preferences. 
6) Fill the web-form and proceed further.

Thank you

[Material23]

Alright, thanks for help. 

[KrazyToad]

☺️