Schematic
The circuit diagram: every power rail, signal and part with its reference designator. Use it to understand why a rail is missing — which chip makes it, which enable signal turns it on, which power-good it reports.
Browse schematics →Browse the catalog
Three kinds of files, one page per board
Schematics Schematic PDFs show every power rail, signal and part with its reference designator. 4,998 boards Boardviews Boardview files show where each part and test point sits on the PCB and which net it belongs to. 3,350 boards BIOS BIOS dumps are copies of the SPI flash chip, used to recover boards with corrupted firmware. 8,714 boards
How it works
From a dead board to the right files in four steps
- 1
Read the board code
Open the laptop and find the code printed on the motherboard: LA-, NM-, DA0, 6050A, 820- or a model name with REV.
- 2
Search the catalog
Type the code or the laptop model. Each board has one page with all its schematics, boardviews and BIOS files.
- 3
Check the revision
Compare the revision on your PCB with the files. Parts and values can change between revisions.
- 4
Diagnose with the guides
Use the schematic and boardview together, measure the rails and follow the step-by-step guides.
Brands
Popular brands
- Asus2,331 boards · 6,016 filesROG · TUF · VivoBook
- HP1,420 boards · 5,588 filesPavilion · ProBook · EliteBook
- Lenovo1,254 boards · 5,090 filesThinkPad · IdeaPad · Yoga
- Dell1,062 boards · 4,180 filesInspiron · Latitude · Vostro
- Acer865 boards · 2,747 filesAspire · TravelMate · Nitro
- MSI802 boards · 2,086 filesCyborg
- Gigabyte755 boards · 2,138 files
- Toshiba482 boards · 1,229 filesSatellite · Tecra · Portege
- Samsung460 boards · 850 files
- ASRock420 boards · 819 files
- Sony205 boards · 648 filesVAIO
- ECS202 boards · 430 files
Popular series
Board codes
Know your board code
Laptop brands rarely design their own boards. The code printed by the board maker (ODM) is what schematics and boardviews are filed under — learn to read it and finding files gets easy.
Fresh in the catalog · updated daily
Recently added boards
Last update : +451 files added. 9 new files posted in the last 7 days. Update log
- HPHP 15-AC LA-C921PSchematicBIOS
- LenovoLenovo JS47L NM-E781BIOS
- AppleApple X2819 820-03286SchematicBoardview
- HPHP EliteBook 840 G6 6050A3022501SchematicBoardviewBIOSArchive
- DellDell Latitude E5470 LA-C831PSchematicBIOS
- LenovoLenovo IdeaPad 330S 15IKB 17807-3MSchematicBoardviewBIOS
- DellDell Latitude 7400 LA-G871PSchematicBoardviewBIOSArchive
- HPHP Envy X360BIOSArchive
- LenovoLenovo ThinkPad L390 18724-1MSchematicBIOS
Learn
Repair guides by topic
- Reading SchematicsHow laptop schematics are organised, what the symbols and net names mean, and how to trace a fault on paper.21 guides
- BoardviewBoardview formats, viewer software and how to find parts and test points fast.17 guides
- BIOSSPI flash chips, programmers, clean dumps, ME regions and BIOS recovery.25 guides
- DiagnosticsStep-by-step fault finding for dead, shorted and half-working laptop boards.30 guides
- Power CircuitsPower rails, sequencing, charging and VCore circuits explained for repair work.18 guides
- MultimeterHow to use a multimeter on a laptop board: every mode, every common component, and what the readings mean.15 guides
- ToolsChoosing and using the tools of board repair, from multimeters to hot air.15 guides
- BrandsBrand-specific board numbering, quirks and common faults.13 guides
- ComponentsIdentifying and testing the parts you meet on a laptop motherboard.11 guides
Latest guides
- Boardview
No Boardview for Your Board? How to Work Without One
No boardview for your board? How to work from the schematic alone: recognising circuits by layout, mapping nets with continuity, photos and related revisions.
- BIOS
Keeping the Windows Product Key (MSDM) When Reflashing a BIOS
How the Windows product key is stored in a laptop BIOS (MSDM table), why reflashing can lose it, and how to keep the board's own key when restoring a BIOS chip.
- BIOS
What Is a Laptop BIOS Chip and Where to Find It
What the BIOS chip on a laptop motherboard stores, how to recognise it by marking and package, where it sits, and what to check before reading or flashing it.
- Boardview
What Is a Boardview File and Why You Need One
What a boardview file contains, how it differs from a schematic and a PCB design file, and why it speeds up every step of laptop motherboard repair.
- BIOS
BIOS Recovery Without a Programmer: Vendor Recovery Methods
BIOS recovery without a programmer: vendor key combinations, recovery from USB drives, self-healing firmware, and when a programmer is still needed.
- Power Circuits
VCore Phases, Inductors and Output Capacitors
Inside a laptop VCore regulator: how phases share the load, smart power stages, phase inductors, output capacitor banks, and comparing phases to find faults.
At the bench
Calculators for board repair
- Ohm's Law CalculatorEnter any two of voltage, current, resistance or power and get the other two.
- SMD Resistor Code CalculatorDecode the number printed on a chip resistor: 103, 4R7, 1002, R010 or EIA-96 codes like 01C.
- Voltage Divider CalculatorOutput voltage of a two-resistor divider, or the resistor you need for a target voltage.
- Regulator Feedback Resistor CalculatorThe output voltage a feedback divider sets — or the resistor you need for a given rail.
- SPI Flash Size Calculator (BIOS Chip Mbit to MB)Chip marking to size in MB and bytes — and whether a BIOS file fits the chip.
- File Checksum Calculator (SHA-256, SHA-1, CRC32)SHA-256, SHA-1 and CRC32 of a BIOS dump, computed locally, with blank-file and descriptor checks.
- mAh to Wh Converter for Laptop BatteriesConvert battery capacity between mAh and watt-hours using the pack voltage.
- Laptop Board Code DecoderPaste a board code and see who made the board, the code family and matching catalog boards.
The basics
Schematic, boardview or BIOS — which one do you need?
Boardview
The physical map of the PCB: part outlines, pins, test points and nets. Use it to find where a part or a net is on the board in seconds, and to measure at the right pad.
Browse boardviews →BIOS dump
A copy of the SPI flash chip contents. Use it to recover a board whose firmware is corrupted — after you have read and saved the original chip, because a dump carries data from the board it came from.
Browse BIOS dumps →Questions people ask
Are the files free to download?
Yes. Every board page links to the original public post on Telegram, where the file can be downloaded for free. This site does not host files, ask for payment or require an account.
How do I find the right schematic for my laptop?
Open the laptop and read the board code printed on the motherboard — for example LA-D312P, NM-A841, DA0R63MB6F1 or 6050A2412601 — and search for it. The laptop model name alone is often not enough, because one model can be built with several different boards.
What is the difference between a schematic, a boardview and a BIOS dump?
A schematic is the circuit diagram of the board. A boardview shows where every part and test point sits on the physical PCB and which net each pad belongs to. A BIOS dump is a copy of the firmware stored in the board's SPI flash chip, used to reprogram a corrupted chip.
Which program opens boardview files?
OpenBoardView is free and opens the common formats such as .BRD, .BDV and .FZ. FlexBV supports more formats, including .TVW and .CAD. Each board page lists the formats available for that board.
Can I flash any BIOS dump from this site onto my board?
Only after you have read and saved the original chip, and only if the board code and revision match. A full dump contains data from the board it was read from, such as serial numbers and the MAC address, which you may need to restore from your backup.
A file is missing or a link is broken. What can I do?
Telegram posts are sometimes deleted by their authors. Use the contact page to report the board page; links are refreshed when the catalog is rebuilt.
About the project
Made at the repair bench
Service files for laptops and motherboards are scattered across Telegram channels under messy names, posted again and again. ExcitingSpas.com reads those posts, works out the brand, model, board code and revision from each file name, merges duplicates and gives every board one clean page. The guides are written from bench experience and checked against real schematics.