scfreen blinking when external power cord plugged in on Hp notebook 15

[fixit64]

screen recenyy blinking while power cord plugged in   plug no tpluged  in stops flashing

paid for tech support they could not fixit

blinking/flashing in bios as well

[Riddle_Decipher]

@fixit64 Welcome to HP Community!

Perform a power reset (no data loss) using these steps: Click here, proceed to next step if this works

Attempt to run a test from the HP hardware diagnostic tool, using this link: Click here for details.

If the issue appears on the diagnostics, it could determine a hardware failure!

Keep us posted,

If you would like to thank us for our efforts to help you, 

Give us a virtual high-five by clicking the 'Thumbs Up' icon below, followed by clicking on the "Accept as solution" on this post, 

Have a great day!

[fixit64]

I tried your idea didnt work  next plan!!!!!!!!!!!!!

[Riddle_Decipher]

Well, the second steps was a mere h/w test to identify the issue, did you Click here and perform the tests? If not, please do,

If yes, what's the result of the test, did it pass or fail? If it failed what's the error/failure ID?

[fixit64]

long term test failure 6CU32X-8AG9RU-XD7X6bK-61DJ13

short term test failure 6CU32X-8AG9RU-XD7X6K-60VA13

[Riddle_Decipher · Accepted solution]

@fixit64 I've successfully deciphered the failure ID and here's what it represents: code - 303 = Hard Disk 1 Quick Test Failure,

And I suggest you talk to HP support and discuss your options, follow the below steps to get started:

1) Click on this link - http://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.

If you wish to thank me for my efforts, you could click on "Accept as solution" on my post as the solution should help others too.