Download Lenovo R720-15IKBM DY520 NM-B391 BIOS BIN + Schematic & Boardview

FREE DOWNLOAD: Essential Repair Files for Lenovo R720-15IKBM Motherboard Model NM-B391. Includes BIOS dumps, schematics diagram, and boardviews to fix issues like no display, dead motherboard, and more. ➕ Download now and get your device working again! 🔧

Inside, you'll find:

NM-B391 BIOS dumps can help fix problems like no display or the laptop/desktop not turning on.
NM-B391 Schematics diagram show how the motherboard is wired, which helps you find and fix problems more accurately.
NM-B391 Boardviews help you examine and repair specific parts of the motherboard in detail.

🛠 Common Issues Solved by Lenovo R720-15IKBM BIOS Flash

🔇 Computer won't turn on properly (No lights, no beeps, nothing happens).
🔁 Automatic Restart by itself over and over.
❌ No Display / Blank Screen
🧱 Fan Runs at Full Speed Constantly
⚠️ Computer gets stuck in a special repair mode (BIOS Recovery Mode)

📋 MOTHERBOARD SPECIFICATIONS
Device Type	💻 LAPTOP
Brand/Model	Lenovo R720-15IKBM
MB Part No	NM-B391
CPU/MCU/GPU	🔵 INTEL
ROM File Size	8MB

👇 CLICK BELOW LINK TO DOWNLOAD NM-B391 FILE

📂 Lenovo R720-15IKBM DY520 NM-B391 REV 1.0 BIOS BIN File

Fix boot failures & corrupted BIOS 100% working dump

Instant Download

📐 Lenovo Legion Y520-15IKBN DY512 NM-B191 NM-B391 Schematic PDF

Complete circuit diagrams for hardware troubleshooting

Instant Download

📊 DY520 NM-B391 Rev 1.0 Boardview TVW

Component-level troubleshooting with CAD coordinates

Instant Download

🔑 RAR File Password: indiafix

💡 How to Open NM-B391 Schematic and Boardview

Use Schematic Files for Adobe Reader, any PDF viewer.
Boardview brd file use OpenBoardView, Allegro Viewer
Boardview cad,tvw, bv,brd file use all in one Boardviewer.
Boardview PCB file use FlexBV

🧰 How to Flash BIOS ON NM-B391 (RT809F Method)

Connect RT809F programmer to the BIOS chip.
Open the RT809F software and read the BIOS to make a backup of the original file.
Extract the downloaded BIOS file using the latest version of WinRAR.
Load the downloaded BIN file.
Write and verify the BIOS.
Power on the laptop and check for display or signs of power!

⚠️ Flashing Precautions

Back up your current BIOS before flashing.
Ensure the BIN file matches your motherboard’s BID.
Flashing BIOS incorrectly can brick your device proceed only if confident.
This process may void your warranty.

Legal Notice

These technical documents for Lenovo R720-15IKBM motherboard are provided for educational and repair purposes only. Always follow proper ESD safety protocols when handling computer hardware components. The distributor assumes no liability for improper use of these materials.

💬 If the NM-B391 download link doesn't work or you need a different revision, leave a comment and we'll update the file ASAP!