Lenovo Ideapad 3, Model : 81W1 , Release Year : 2021
Common Issue: Black screen appears on startup despite there being a power light.
Reasons for this issue:
- Faulty RAM or loose seating of RAM.
- Display cable is damaged.
- BIOS is corrupt.
- Faulty integrated graphics or GPU.
- Issue with power circuit on the motherboard.
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Mac Tech Service
Our Service:
1) CMOS battery reset and reflash of BIOS.
2) Testing and replacement of display cable.
3) Diagnostic of RAM slot with oscilloscope.
4) GPU power reflow, board level.
5) Voltage regulation repair done under a microscope.
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