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  • Registered: ‎07-23-2021
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Lenovo Yoga yb1-x90f not booting

2021-07-23, 9:17 AM

Hello Everyone,


Hope you Guys can help me out


I buyed a used Lenovo yb1-x90f -> With Keyboard defect but i must see that it wont boot


If i unplug the battery and plug in the LED Indiecator lights up fade 1 Time and then its constant on. Screen and Keyboard dead


Only 1 Time it boots up to the Login Screen after touching it -> Shutdown


I checked the Mainboard -> 


Number 1 This getting really Warm -> Whats behind this?

Number 2 This LED only lights 1 Time when the book was booting

Number 3 On this Checkpoint i got 3,75-3,76 Volts is that enoough?


I Dont find any shematics that i can control the voltages.


Please help me




5729 Posts


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  • Registered: ‎11-04-2019
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  • Message 2 of 2

Re:Lenovo Yoga yb1-x90f not booting

2021-07-23, 13:06 PM


Hello @ Crachinger!


Thanks for posting here at the Community Forums!


Can you please share here first your device's MTM (machine type-model) number for us to check its specifications?


It can be seen through the device's label/sticker or its original packaging and does usually have a format of 8********R as an example.


What exactly are you seeing on the screen when you try to turn it on?


Try connecting it to an external display/monitor (if available) and see if it will work.




Lenovo Support


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