HP CC129TX 3 long white and two short white light blinking, no screen

[jaynaik2069]

Two days ago, I suddenly encountered multiple (7-8) consecutive blue screen errors, each with different error codes. Afterward, the system entered BIOS recovery mode, but after booting up, the errors reappeared. The system then successfully started in safe mode, where I ran the sfc /scannow command and performed a system restore. The system worked fine for two days after that.

However, today, two errors appeared again:

1. IRQL NOT LESS OR EQUAL, and
2. SYSTEM SERVICE EXCEPTION.

The system briefly went into BIOS recovery mode, but now, the Caps Lock key is blinking with 3 long white lights followed by 2 short white lights, and there is no display.

[Jupitero]

Hello.

3 long and 2 short blinks indicate memory problems.

https://support.hp.com/id-en/document/ish_1997719-1528356-16