Question LENOVO IDEAPAD 100-15IBD Turns on, black screen, Tried everything

Jan 9, 2021
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I have LENOVO IDEAPAD 100-15IBD. Was working good till late December 2020; just before holidays, try to turn it on, the screen is black. I have tried the following to resolve with no change:

  • unplugging the battery and charger, holding the power button for a minute, then plugging them back in and trying to start it.
  • doing the same thing but only plugging in either the battery or the charger afterwards.
  • letting it charge all night (with fans spinning).
  • New CMOS battery
  • Put Thermal Paste on CPU
  • Changed the 8 GB RAM to a new one
  • Replaced NEW DC02001XL10 30pin cable.
  • Replaced FAN
  • Added HDMI cable to Sony TV no response. Pressed F10 too, nothing happens.
  • This a brand new LED screen replaced six months ago.
  • Thinking of replacing the AC adapter.
Laptop Fan turns on without CMOS battery and RAM, no beep. Screen still black.

I hear no beep sound. Getting frustrated. Running out of all resources.

Any suggestions, please help. Thank you a million in advance.
 
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