R720 DY520 NM-B391 REV: 1.0
NM-B391
Lenovo Legion Y520-15IKBM - DY520 NM-B391 Boardview.tvw
Lenovo Legion Y520-15IKBM NM-B391.pdf
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NM-B391
Lenovo Legion Y520-15IKBM - DY520 NM-B391 Boardview.tvw
Lenovo Legion Y520-15IKBM NM-B391.pdf
ok
About this board
Lenovo Legion Y520-15IKBN DY520 — motherboard NM-B391.
Lenovo had this board built by LCFC; LCFC (Lenovo/Compal) board numbers start with NM-. Check the number printed on the PCB before you download.
What this thread covers
- BIOS (full SPI chip dump, .bin)
- Schematic (PDF)
- Boardview (.brd / .bdv / .cad)
Typical reasons to reflash: no power or no display after a failed BIOS update, a BIOS/supervisor password lock, or a corrupted Intel ME region.
Back up the original dump first — it contains machine-specific data (serial, UUID, MAC, ME), and you will want it if anything goes wrong.
If you have a working file for this board, please share it below. More files: search NM-B391 in File Finder.
Attachments
Lenovo Legion Y520-15IK NM-B391.BIN
8 MB · Views: 24
8 MB · Views: 24
Lenovo Legion Y520-15IK NM-B391.pdf
3 MB · Views: 20
3 MB · Views: 20
Lenovo Legion Y520-NM-B391 Boardview.tvw.zip
6.9 MB · Views: 19
6.9 MB · Views: 19
W25Q80.BIN.zip
40.2 KB · Views: 21
40.2 KB · Views: 21
