Try a full power refresh and check if this resolves the problem. Here’s the procedure: Disconnect the charger if connected and turn off the laptop. Dis-assemble the laptop and disconnect the main battery from the motherboard. You only have to disconnect it, not remove it. Disconnect the coin cell RTC battery from the motherboard. > Laptops > S Series laptops (ideapad) > S145-15IIL Laptop (ideapad) S145-15IIL Laptop (ideapad) Product Home; Drivers & Software; Troubleshoot & Diagnose Function keys are not working - Lenovo Support BY. PC Support > Laptops > 100 Series laptops (ideapad) > 110-15ISK Laptop (ideapad) - Type 80UD. This video demonstrates how to turn on the keyboard backlight on your Lenovo PC. Press the function key and spacebar to toggle the brightness of the keyboard backlight. One tap is for low brightness, two is higher, and the third turns the light off. For more information, click: How to turn on/off keyboard backlight. How to Enter the Bios of the Flex 5With the Machine offHold Fn+F2, then press the power buttonkeep holding Fn + F2 to Enter biosLenovo Ideapad Flex 5Ryzen 5 Once the power switch is sorted, try turning on your Lenovo laptop by following the abovementioned steps. If the issue continues to bother you, here are some efficient fixes that have proved their worth. Check and resolve overheating issues. Leave your laptop idle for an hour or two before attempting a boot. Charge the battery up and ensure you iHp6O. Is your laptop not turning on? Learn how to troubleshoot and fix no power issues with your laptop to get it up and running again. 110-15ACL Laptop (ideapad Knowing the cpu probably can handle getting hot, you could maybe raise the lower limit in a fan adjustment plan to avoid having fan spinning up at lower temps. I hope it isn't a normal thing with fans spinning up and down on idle. I will get a Lenovo IdeaPad Pro 5 14" with an integrated gpu (on the cpu), in a few days, and I guess I will find out. Next turn on the computer and allow it to fully load. Once loaded, press the "Windows Key" + "P" to open the "Easy Display Switcher". In here select "Computer only". Now shut down the computer and disconnect the external monitor. Disconnect the external monitor. And finally restart the computer. Follow this article How to switch on bluetooth to turn on Bluetooth in Windows. Check if the Bluetooth indicator is shown in the system tray. Use another Bluetooth device for the connection test. Open Device Manager. Check if the Bluetooth driver was installed correctly or disabled ( What do the icons mean in Device Manager ). > Laptops > C Series laptops (ideapad) > C340-14IWL Laptop (ideapad) C340-14IWL Laptop (ideapad) Product Home; Drivers & Software; Troubleshoot & Diagnose Press the Fn + Spacebar keys together to turn on or off the keyboard light. Tap the Spacebar to toggle the backlight from Low, High, and Off. Alternatively, use Lenovo Vantage to manage the keyboard backlight. You should see a small diagram indicating the backlight feature on your spacebar, see the picture below.

lenovo ideapad 100 not turning on