MS-7869 Ver 1.0 is an OEM motherboard manufactured by MSI for Acer Aspire

If you downloaded the manual, pay attention to these three sections—they are where most troubleshooting occurs:

| Pin | Signal | Function | Pin | Signal | Function | | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | HD_LED + | HDD LED Positive | 2 | PWR_LED + | Power LED Positive | | 3 | HD_LED - | HDD LED Negative | 4 | PWR_LED - | Power LED Negative | | 5 | RESET_SW | Reset Switch | 6 | PWR_SW | Power Switch | | 7 | RESET_SW_GND | Reset Ground | 8 | PWR_SW_GND | Power Ground | | 9 | | No connection | 10 | KEY | No pin (Blank) |

Check the 24-pin and 4-pin connections first. Capacitors on these older boards can occasionally bulge; a quick visual inspection can rule out physical hardware failure.