I have PC with A7V400-MX and can't use any ALARMS (programms that can wake up the computer on needing time) on it. I've tryed to make programm by myself and had found that standard CMOS alarm registers not working. Also no such register were found on all of 128 bytes of standard CMOS memory. There seems to Find any info about this question is hard issue. Please help...

SOURCE: asus a7v400-mx se troubleshooting

One question:has the PC been working with monitor and all working properly at some stage. Or is the a new installation.

SOURCE: Possible motherboard problem ASUS A7V400-MX

a7v400-mx sound driver

SOURCE: i need schematics for p4p800 deluxe and a7v400-mx motherboards

If the plug is square it is most likely the 12volts power supply for CPU fan on some motherboards. Don't worry about it, your motherboard does not require this connector and it probably gets the 12 volts from a different connector. Check your old motherboard to see if this connector is for a fan. You can power up and check this connector's voltage with a multimeter.

Sudeep Chatterjee

• 3267 Answers
• Posted on Apr 18, 2009

SOURCE: A7V400-MX will not boot

In such cases its practical to change the SMPS with a working power supply of the same rating and then trying it out. If with the new power supply it works fine then cange your SMPS. Also make sure that all cables are snug tight and generally ree from dust. The same applies to your RAM too................sodeep

SOURCE: asus a7v400-mx

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