MS-7A74 – MSI B250
MS-7A74 is the MSI main board used in the MSI B250. ChambersDesignInc.com has indexed 3 files for this board — 1 BIOS file, 1 schematic and 1 boardview.
Revisions seen in file names: 1.0. The BIOS dumps are 8 MB images. The earliest file dates from August 2024 (Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive).
BIOS dumps 1
Schematics 1
Boardviews 1
Board facts
| Board number | MS-7A74 |
|---|---|
| Designed by | MSI |
| Platform group | MS-7 |
| Revisions | 1.0 |
| BIOS chip size | 8 MB |
| First seen | 2024-08-01 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Archive |
| About the number | MSI board numbers start with MS-: MS-1xxxx for notebooks, MS-7xxx for desktop boards (also used in HP, Lenovo and other OEM PCs), MS-Vxxx for graphics cards. |
Laptops that use MS-7A74
- MSI B250
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| .bin | raw SPI flash image | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
| .cad | .cad boardview | FlexBV, OpenBoardView or BoardViewer |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
Questions
Who designed the MS-7A74 board?
MS-7A74 is an MSI board number.
What BIOS chip size does MS-7A74 use?
The BIOS images for MS-7A74 are 8 MB.
Which laptops use the MS-7A74 board?
Files in the catalog link MS-7A74 to the MSI B250.
Is there a boardview for MS-7A74?
Yes, 1 boardview file in .bdv and .cad format.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.