Asus P8H61-M EVO User Manual download pdf (Page 41)

ASUS P8H61-M EVO 1-29

1.11 Onboard switches

Onboard switches allow you to ne-tune performance when working on a bare or open-case

system. This is ideal for overclockers and gamers who continually change settings to

enhance system performance.

1. MemOK! switch

Installing DIMMs that are incompatible with the motherboard may cause system boot failure,

and the DRAM_LED near the MemOK! switch lights continuously. Press and hold the

MemOK! switch until the DRAM_LED starts blinking to begin automatic memory compatibility

tuning for successful boot.

• Refer to section 1.12 Onboard LEDs for the exact location of the DRAM_LED.

• The DRAM_LED also lights when the DIMM is not properly installed. Turn off the system

and reinstall the DIMM before using the MemOK! function.

• The MemOK! switch does not function under Windows® OS environment.

• During the tuning process, the system loads and tests failsafe memory settings. It takes

about 30 seconds for the system to test one set of failsafe settings. If the test fails,

the system reboots and test the next set of failsafe settings. The blinking speed of the

DRAM_LED increases, indicating different test processes.

• Due to memory tuning requirement, the system automatically reboots when each timing

set is tested. If the installed DIMMs still fail to boot after the whole tuning process, the

DRAM_LED lights continuously. Replace the DIMMs with ones recommended in the

Memory QVL (Qualied Vendors Lists) in this user manual or on the ASUS website at

www.asus.com.

• If you turn off the computer and replace DIMMs during the tuning process, the system

continues memory tuning after turning on the computer. To stop memory tuning, turn off

the computer and unplug the power cord for about 5–10 seconds.

• If your system fail to boot due to BIOS overclocking, press the MemOK! switch to boot

and load BIOS default settings. A message will appear during POST reminding you that

the BIOS has been restored to its default settings.

• We recommend that you download and update to the latest BIOS version from the

ASUS website at www.asus.com after using the MemOK! function.

P8H61-M EVO

P8H61-M EVO MemOK! switch

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Asus P8H61-M EVO User Manual Page 41