The issue lies with the board itself.
The issue lies with the board itself.
Hi everyone. I'm dealing with an Asus H81 for my home server/NAS and it's having some odd behavior. When I turn it off, it doesn't restart properly—pressing the power button gives no result. The only solution seems to be turning off the power supply unit and waiting a few hours before trying again. Sometimes it powers back on immediately, other times it stays off. It feels like a random problem. I suspect it might be connected to the CMOS battery, since after resetting the BIOS when the PSU was off, things worked fine. But replacing the battery didn't fix the issue. Anyone have any ideas or solutions? Thanks!
This situation is new. Previously, the board worked perfectly on my primary machine without any problems. Now, it’s only occurring recently after I began using it again in a different setup. It might be related to the power supply unit. That’s the only hardware component that has changed since then.
I'll check the caps now. It seems I have limited options left, and I've already tested various CPUs and RAM. Could you clarify what you mean by a BIOS issue? How would you go about diagnosing it? Thanks!
Yes, connecting the pins in short directly achieves the same outcome.
Like anything, a BIOS can show signs of wear over time. I've been told my boards seem to reset the CPU after each restart. My Maximus X, which is still relatively new, will power on and shut down three times. A fresh CMOS often fixes this problem, especially after heavy overclocking. I also tried setting another board's voltage to 1.60V while it was running at 1.56V for a bit. These are just a couple of cases. Overall, the hardware works well unless it's due to some BIOS quirks.
It's feasible to encounter a partially corrupted BIOS because of an insufficient CMOS battery. It hasn't been noted whether the battery has been changed before, so verify its condition and ensure it provides at least 2.9 volts or higher. A fresh battery typically offers 3.0 volts; if it drops to or below 2.9 volts, replacement is necessary to avoid issues. A weak battery may lead to unusual behavior during startup. First, swap the battery and then perform a board reflash to rule out this cause. The other possibility involves a faulty BIOS chip, which would require replacement or professional servicing based on whether the chip can be removed.
I’d consider a reflash to verify everything is fine. After completion, it should resolve the issue. If the flash fails and points to a faulty sector or block, replacement is necessary. There’s a user on Fleabay named "BIOS Depot" who offers preflashed chips; you’ll need to provide precise board details so they can assist effectively. If your chip isn’t swappable, it may be time to send it in for repair.