First world solutions

Retro

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Post nifty solutions here to pesky problems that you're especially satisfied with. I'll kick it off with this:

A few weeks ago, my gaming PC started rebooting at startup like there was a failed overclock recovery (it's an enthusiast motherboard) but only when it had been off for a few hours. Then, very intermittently, it would spontaneously reboot when just sitting on the Windows desktop doing nothing, sometimes twice a day, again that "overclock reboot" when it's not even overclocked anymore. Can't go on like this.

I suspected either a failing CMOS battery or failing motherboard since the PC is now 12 years old and well overdue for an upgrade. I wasn't getting any CMOS checksum errors however, which are typical of a failing battery, so it wasn't obviously the battery.

I booted into the BIOS and looked around: nothing to see, all normal. Rebooted with CTRL-ALT-DELETE, ie didn't save settings and it continued to work fine after that for about a week, when once more it rebooted while in Windows. I finally got round to changing that pesky CMOS battery which is quite old by now and it's been fine since. Still need to give it more time to be absolutely sure, but I think I nailed it. Note this wasn't the original CMOS battery, which I'd replaced long ago.

Hot tip: when changing the battery, do so with the PC running, that way the short power loss doesn't corrupt the settings. Flip it out with something plastic and be careful not to let the battery drop on the motherboard and possibly cause a short circuit.

This thread is the antedote to this one:

 

eidairman1

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Joined
21 Jun 2023
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102 (1.00/day)
Post nifty solutions here to pesky problems that you're especially satisfied with. I'll kick it off with this:

A few weeks ago, my gaming PC started rebooting at startup like there was a failed overclock recovery (it's an enthusiast motherboard) but only when it had been off for a few hours. Then, very intermittently, it would spontaneously reboot when just sitting on the Windows desktop doing nothing, sometimes twice a day, again that "overclock reboot" when it's not even overclocked anymore. Can't go on like this.

I suspected either a failing CMOS battery or failing motherboard since the PC is now 12 years old and well overdue for an upgrade. I wasn't getting any CMOS checksum errors however, which are typical of a failing battery, so it wasn't obviously the battery.

I booted into the BIOS and looked around: nothing to see, all normal. Rebooted with CTRL-ALT-DELETE, ie didn't save settings and it continued to work fine after that for about a week, when once more it rebooted while in Windows. I finally got round to changing that pesky CMOS battery which is quite old by now and it's been fine since. Still need to give it more time to be absolutely sure, but I think I nailed it. Note this wasn't the original CMOS battery, which I'd replaced long ago.

Hot tip: when changing the battery, do so with the PC running, that way the short power loss doesn't corrupt the settings. Flip it out with something plastic and be careful not to let the battery drop on the motherboard and possibly cause a short circuit.

This thread is the antedote to this one:

I always have system unplugged, I follow mobo manual on how to clear cmos, Inwill do a clear cmos 1st, change battery and then do it 1 or 2 more times.

Heck brand new mobo I clear cmos before I ever start it as there are parts that make it by qc with settings still implemented,been doing that since 1999.
 

Retro

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Agreed. The way I do it with a brand new mobo, I normally boot it up in a minimum configuration, just enough to get a picture and control it and check things look normal. Then, I'll flash the latest BIOS onto it and finally clear the CMOS RAM as per the process in the manual. After that, I make a test install of Windows and drivers on a spare SSD and check things are stable and will check it overclocks ok, nothing fancy. When that passes, I begin the process of physically building the new system with it.

BTW, my PC is still running fine with the new battery, so I'm quite confident now that I nailed the problem. Famous last words...
 
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