Yes, replacing the CMOS battery can resolve instability issues.
Yes, replacing the CMOS battery can resolve instability issues.
Hey. Recently I got a free computer with a crashing issue. It runs fine, then all of a sudden crashes. Doesn't matter if your in the BIOS or Windows, it still dies after a bit. Stressing it with prime95 doesn't reveal anything, it doesn't crash because of the stress test, sometimes it runs it fine. While resetting the CMOS, I didn't know what to try so I ran the computer with the CMOS battery uninstalled. All of a sudden it doesn't crash. Sitting in the BIOS for an hour without issue. Do you think it's a coincidence (occasionally it has worked flawlessly, but turning it on the next day its back to crashing) or could the CMOS battery/bios be the problem? CPU: Intel i7-4790K (stock speeds and voltages) MOBO: Gigabyte Z97MX-gaming5 RAM: Kingston HyperX fury 2x8gb PSU: Foxtech 500w 80+ What I've tried to fix the issue before: Different RAM, Different PSU, Hard drive, SSD, Bios update, Clearing CMOS (jumpers), Clearing CMOS (battery), Replacing CMOS battery, Undervolting, Overvolting, Underclocking, Overclocking, and generally adjusting every single setting in the BIOS, XMP, Different ram slots, Single channel, New thermal paste and pads, Different cooler, Different fan headers.
The power source was acting poorly, but replacing it with an ASUS Strix 750W 80+ Gold PSU featuring twin 4-pin CPU connectors resolved the same problems. It appears the issue wasn't the power supply itself, as I randomly changed it during tests without success.
The motherboard is showing signs of failing or reaching the end of its life, causing instability. Any fixes won't restore it to its former performance.
Batteries have a limited lifespan. It's not uncommon for them to fail when they're completely drained. However, it's always wise to opt for fresh batteries just in case. Since the system appears to be outdated, it might also be the battery management unit that needs attention.
You're experiencing different issues depending on the system and environment. In BIOS you notice a freezing state with a static display that only resolves when power is maintained, while in Windows you encounter random crashes with a black screen and failing video output during operation. The problem seems to vary by hardware and usage context.