Hp notebook System Fan (90b) error message How to solve
- You must first make or maintain the fan care of your computer. The fan must be in operation and air circulation. The fan may be stuck. This is the most important cause of this mistake. The ventilation slots for air in your computer must be clean.
- Download and install the original bios of your computer. Hp notebook bios update how to do click and learn.
- disconnect your computer from the battery and charger and press and hold the on / off button for 10 seconds. your strength is all over.