Power led blinking but no display

[Ronzier]

6 days ago after opening from sleeping mode, the display remained black even after restarting the notebook. After 4 days the laptop starts normally but the screen got freezed sometimes. Then again today power led blinks but no display. Please help me to resolve the issue.

[Lil_Boy_Blue]

Hi
First:- Turn off the computer, press and hold the PWR button for 4 seconds.

Then - Leave only keyboard and mouse connected, disconnect all externally connected
devices such as Docking Station, USB storage devices, displays, and printers.
Unplug the AC adapter from the computer.

Next - Press and Hold the Power button for 15 seconds to Hard Reset.
Rinse and Repeat

NOW begin checking/testing/proving the Hardware is fit for purpose.

Power on your PC, press ESC (repeatedly), then F2 at the prompt.
Choose System Tests (Fast Test does a 4 minute hardware check).
AND/OR
HOW DO I USE DIAGNOSTICS?

HP PC Hardware Diagnostics Windows is a Windows-based utility that allows you to run diagnostic tests to determine if the computer hardware is functioning properly. The tool runs within the Windows operating system in order to diagnose hardware failures. HP PC Hardware Diagnostics Windows comes pre-installed on new HP computers, but if not on yours, download here:- http://ftp.hp.com/pub/softpaq/sp93001-93500/sp93457.exe

https://support.hp.com/us-en/document/bph07107

[Ronzier]

No change still power led blinking no display

[Lil_Boy_Blue]

OK

So did you read the document in the link provided?

https://support.hp.com/us-en/document/bph07107

BYE.

[Ronzier]

Yeah I have read it. The blinking is same, long white power led blink. Tried the options but it didn't resolved.

Always the same no display only power led blinking.

[Lil_Boy_Blue]

AND maybe you would have worked out that the age of the PC and the number of blinks could actually help us to help you.

BIOS Flashing light error codes for Computers released between 2011 and January 2015.

On some computers, the motherboard can flash or change the colour of lights on the outside of the case, such as the power button LED and the hard drive activity LED. For computers that support this technology, lights blink and provide a beep to indicate a failure condition.

LED and BEEP condition	Description	Corrective action
Power button LED blinks 5 times with 5 beeps	Memory	Reseat memory DIMM modules. If the problem is not resolved, contact support to resolve a possible RAM or Main-Board failure.
Power button LED blinks 6 times with 6 beeps	Video Card or Graphics	Reset the graphics card (if applicable). If the problem is not resolved, remove other accessory cards, and replace the graphics card or Main-Board.
Power button LED blinks 7 times with 7 beeps	Motherboard/ Main-Board failure	Contact support for possible Main-Board replacement.
Power button LED blinks 8 times with 8 beeps	BIOS/CMOS (ROM) problem,	Perform BIOS recovery with external media (USB/CD-ROM).

[Ronzier]

My laptop is released in 2017

[Lil_Boy_Blue]

Then you will know your description is hard to match...

Beep & LED error codes for Post April 2015 PC's	https://support.hp.com/us-en/document/bph07107
You get a LONG (MAJOR) signal category, RED LED & then a SHORT (MINOR) signal category, WHITE LED. Major – the category of the error; Minor – specific error in that category The AUDIBLE repeats 5 times, and the VISUAL until power is removed.	LONG Beeps / Blinks	Error category (Single beeps / blinks are NOT used)
2	BIOS
3	Hardware
4	Thermal
5	Main-Board
Category	MAJOR MINOR	Issue description	Troubleshooting Steps
BIOS	2.2	The main area (DXE) of BIOS has become corrupted and there is no recovery binary image available. Also happens when updating BIOS.	Typically no steps needed. 1. Allow the system to complete its updates and changes. 2. If updates are stalling, attempt Sure Start Recovery.
BIOS	2.3	The embedded controller policy requires the user to enter a key sequence.	1 Follow any prompts given. 2 If issue persists, attempt Sure Start Recovery.
BIOS	2.4	The embedded controller is checking or recovering the boot block.	1 Allow the computer to attempt to recover the BIOS. 2 If after several minutes the issue persists, attempt Sure Start Recovery.
Hardware	3.2	The embedded controller has timed out waiting for BIOS to return from memory initialization. Indicates potential memory failure.	1 Re-seat memory. 2 Correct memory configuration. 3 Test with known good memory. 4 Replace affected component.
Hardware	3.3	The embedded controller has timed out waiting for BIOS to return from graphics initialization. Indicates potential graphics chip failure.	For integrated configuration (I/C): 1 For I/C, confirm if graphics is on processor or Main-Board. 2 For I/C where graphics is on the CPU, swap known good processor. 3 For I/C, replace Main-Board and/or processor as appropriate. If the add-in card requires additional power, verify the cord is plugged in. For non-integrated configuration (N-I/C😞 1 Reseat card if able. 2 Test known good card if able. 3 Replace affected component.
Hardware	3.4	The Main-Board displays a power failure (crowbar).* Indicates potential power system failure.	1 Reduce to minimum config (CPU, Main-Board, PSU, Single memory DIMM) and isolate failed component. 2 Reduce further if issue persists. 3 Test known good PSU. 4 Replace affected component. 5 If unable to confirm source, replace CPU, Main-Board, PSU.
Hardware	3.5	The processor is not detected.* Indicates potential CPU failure.	1 If able, reseat CPU. 2 If able, test known good CPU. 3 Replace affected component. 4 Replace CPU & Main-Board if unable to perform steps.
Hardware	3.6	The processor does not support an enabled feature. CPU being asked to support feature it does not have.	1 Clear CMOS of unit and do not use the chosen setting. 2 If CPU is verified to support setting, replace CPU.
Thermal	4.2	A processor over temperature condition has been detected.* CPU overheat is detected.	1 Verify fan(s) are working as expected. 2 Clean fans. 3 Reset CMOS. 4 Replace thermal grease. 5 Replace CPU.
Thermal	4.3	An ambient temperature over temperature condition has been detected. Computer overall temperature is too high.	1 Verify fans are working. 2 Clean fans. 3 Reset CMOS. 4 Replace thermal sensor. 5 Replace Main-Board if issue persists.
Thermal	4.4	An MXM over temperature condition has been detected. The MXM Graphics card has overheated.	1 Verify system fan(s) are working. 2 Clean fans. 3 Reset CMOS. 4 Replace MXM card.
Main- (Mother) Board	5.2	The embedded controller cannot find valid firmware. Controller is missing appropriate ROM.	1 Remove any recently inserted Hardware. 2 Reset CMOS. 3 Update BIOS while affected components are removed. 4 Test known good component. 5 Replace component or Main-Board as needed.
Main- (Mother) Board	5.3	The embedded controller times out waiting for the BIOS. Component is not reachable by BIOS in certain time limit.	1 Reseat component. 2 Test known good component. 3 Replace component or Main-Board as needed.
Main- (Mother) Board	5.4	The embedded controller has timed out waiting for BIOS to return from Main-Board initialization. Main-Board isn’t initialising quickly enough for component.	1 Verify the correct power supply being used. 2 Reset CMOS. 3 Reseat components, 4 Test known good components. 5 Replace defective parts found.

[Ronzier]

2.4 Recover the bias