CMOS error 502 ve system fan error 90b

[İbrok44]

Hello, I have an HP Pavilion Gaming 15 EC2059nt model laptop, but when I press the power button of the laptop, no image appears on the screen immediately and when the system screen is turned on, I receive the system fan error 90b error and I noticed that one of my fans is not spinning. Then when I opened the back cover of the laptop, followed the battery cable and disconnected it. When I press the button, I get cmos error 502 but all my fans are working but the problem is not solved, it's like a vicious circle.

[resistencia]

Hi @İbrok44 

If the battery is disconnected, you will always have CMOS 502 error in this model, because the RTC battery is integrated in the main battery.

try updating the BIOS.

HP Pavilion Gaming Laptop 15-ec2059nt (68N74EA) Software and Driver Details

[İbrok44]

Hello, unfortunately, I cannot enter the BIOS and the laptop remains on a black screen. After a while, when I receive an error message, I get the system fan error 90b error on the screen and after 15 seconds the device turns off, so I cannot reset the bios or cmos.

[resistencia]

The most likely is that you need to change the fan but try doing a power reset.

HP PCs - How to power reset your computer | HP® Support