Motherboard problem...

[Comage]

My Asus A7V133-C is giving me voltage problems. The I/O voltage of 3.3v reads as 3.632V, and my Vcore of 1.75V reads as 1.84V. I'm running an Athlon 1.2GHz (non-XP). Voltage readings obtained from Asus PC Probe.

E-mail Asus Technical support, and this was their reply:

Dear customer:
as we did not find the issue in our side, please contact with your local reseller directly for help, via them can send the MB to our repair
center, our RMA engineer will help you verify again.
Thank you used our products very much, welcome you to make valuable suggestions more, we will make great efforts to accomplish
better.

Best Regards,
ASUS Customer Service Center Shanghai


And this reply did not came after they asked me to use the latest version of PC Probe (which I already did). I think they're just stumped and refuse to really admit anything. I've been using this board for over a year already...

[Giblet Plus!]

Make sure to rule out the power supply as a contributing factor.

[Comage]

Well, I really don't know about that. I'm using an Enlight brand PSU. How do I really test the power supply? I know nuts about testing PSUs with multimeters... :confused:

[AllGamer]

Just SWAP the PSU with another computer PSU, that's the best and easiest without expensive tools

:t

[Comage]

Hmm.. I don't have one. Looks like I'll have to think of an alternative way to solve this problem...

[NDD]

Try to verify the PC Probe readings with BIOS readings and Motherboard Monitor readings. It's generally turns out to be fine :)

[Comage]

Okay thanks ND. I will check it out and post back here. Do you imply that the software is faulty, or the compensation it gives is too much?

I did a default installation of the Asus PC Probe, and it really should be odd that with their compensation (if there is any), the I/O voltage exceeds their default threshold given. As in, with all default settings on the software and the BIOS set, the program gives me a beep beep error to signify that the I/O voltage has been exceeded. :mad:

[x51out]

Personally, I wouldn't worry too much about that. My XP2000+ is a 1.75volt cpu, but the mobo(Shuttle Ak31v2.0) bios says 1.712volts and MBM5 says 1.77volts. That is a relatively big disprepancy, but it's not really bothering me because everything is solid and stable, even when oc'ing. I replaced my generic 350W psu with an Antec True 430 and get the same results. No bizarre errors=no panic, right?:cool:

[NDD]

I still think it's a software problem, Comage.
And x51out, going 0.1v more on CPU core is one thing, but going 0.3v on I/O is another, and can be quite dangerous ...

[x51out]

I think it's just a read error.

[Comage]

By the way, I've check the motherboard manual for more information. It seems that the I/O voltage jumper settings allows you to switch between 3.3V and 3.56V. By default, the I/O voltage IS 3.56V (for unknown reasons). I did try switching back to 3.3V to test, and the system refused to boot up. Endless beeping errors which translated to "No DRAM detected or installed".

I guess that the board needs a higher I/O voltage for any RAM to work on it... :(