A:Answer If the laptop will not boot up, power on, or it's just black screen but the fan, please do the following. Please try to do a power cycle by pressing and holding down the power button to shut it down completely. If it still black screen after a few minutes, at least 10 minutes, please repeat the power cycle process again. If the laptop is applying updates in the System Registry, it will black screen temporarily until the update were applied successfully. Also, please try to disconnect the power cable and let the unit drain for 24 hours to clear the memory. This will reset the hardware to default settings. After doing this, please reconnect your AC adapter, do not power on the laptop until the battery was charged. If you need further assistance, please call Product Support Hotline at: 1(888) 678-3688. Also, you can chat with an ASUS live support agent from the link: https://www.asus.com/us/support/article/1135/.