MS-7721 – MSI A68HM-E33
The MSI A68HM-E33, MSI A88XM-E45 and MSI FM2-A55M-E33 are built on the MS-7721 board. ChambersDesignInc.com has indexed 16 files for this board — 6 BIOS files, 2 schematics and 8 boardviews.
File names mention revision 2.3, 3.2, 1.0, 1.3, 3.1 or 5.0. The BIOS dumps are 8 MB images. First posted in April 2021 in Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive.
BIOS dumps 6
Schematics 2
Boardviews 8
Board facts
| Board number | MS-7721 |
|---|---|
| Designed by | MSI |
| Platform group | MS-7 |
| Revisions | 2.3, 3.2, 1.0, 1.3, 3.1, 5.0 |
| BIOS chip size | 8 MB |
| First seen | 2021-04-06 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Archive, BIOS Skema Boardview Laptop |
| 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-7721
- MSI A68HM-E33
- MSI A88XM-E45
- MSI FM2-A55M-E33
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 |
| .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 |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Is there a boardview for MS-7721?
Yes, 8 boardview files in .bdv and .cad format.
Who designed the MS-7721 board?
MS-7721 is an MSI board number.
What BIOS chip size does MS-7721 use?
The BIOS images for MS-7721 are 8 MB.
Which laptops use the MS-7721 board?
Files in the catalog link MS-7721 to the MSI A68HM-E33, MSI A88XM-E45 and MSI FM2-A55M-E33.
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.