Use this to reset BIOS when the system fails to POST.
| Jumper setting | Mode | |:---|:---| | Pins 1-2 closed (default) | Normal operation | | Pins 2-3 closed | Clear CMOS | User Manual Motherboard Ms-7616...
Procedure to clear CMOS:
(If no jumper, remove the CR2032 battery for 5 minutes.) Use this to reset BIOS when the system fails to POST
[Rear I/O] --- [CPU Fan] --- [CPU Socket AM3] --- [VRM caps]
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[USB+LAN+Audio] [DIMM_A1] [DIMM_A2] [24-pin ATX]
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[HDMI/VGA/DVI] [DIMM_B1] [DIMM_B2] [4-pin ATX12V]
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[Chipset 785G] -- [SATA 1-4] -- [Clear CMOS jumper]
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[PCIe x16] ------ [PCIe x1] ----- [PCI] ----- [PCI]
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[Front panel header] [USB headers] [SPDIF] [COM/LPT]
| Connector | Label on PCB | Pins | Purpose | |---------------|---------------|------|--------------------------------| | ATX_PWR | ATX1 | 24 | Main power (use 20+4 pin cable)| | CPU_PWR | PWR2 | 4 | +12V CPU power (mandatory) | | CPU_FAN | CPU_FAN1 | 4 | PWM fan for CPU heatsink | | SYS_FAN | SYS_FAN1/2 | 3 | System fan (voltage controlled)| | FRONT_PNL | JFP1 | 9 | Power SW, Reset, HDD LED, Power LED| | AUDIO | JAUD1 | 9 | Front panel HD Audio (AC’97 compatible)| | USB | JUSB1/JUSB2 | 9 | Additional USB 2.0 ports | | SATA | SATA1–4 | 7 | Serial ATA 3Gb/s connectors | | IDE | IDE1 | 40 | Parallel ATA (for legacy HDD/ODD)| | SPDIF | JSP1 | 3 | Digital audio out header | | COM | COM1 | 10 | Serial port header (RS232) | | LPT | LPT1 | 25 | Parallel printer port header | | CMOS | JBAT1 | 3 | Clear CMOS jumper | (If no jumper, remove the CR2032 battery for 5 minutes