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Finally got that weird Lenovo boot loop to stop by pulling the CMOS battery for a full 10 minutes instead of just 30 seconds.
I mean, I'd tried the usual quick reset a bunch of times, but leaving it out that long while the main battery was disconnected too actually cleared whatever was stuck in the UEFI, maybe it's just me but has anyone else had to do that for the newer ThinkPad models?
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christopher_ross19d ago
Yeah, the 30 second thing is basically useless on modern boards. The capacitors hold a charge way longer than people realize. I had the same exact problem with a T14 last month, nothing worked until I left the CMOS out for like eight minutes with no power cable attached. It's like the UEFI needs that full power drain to truly reset.
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jesse_west19d ago
Hold on, why are we blaming the quick reset? Maybe you just got lucky with the ten minute wait. Could be a loose connection you fixed when you put the battery back in. I've done the 30 second pull on my own newer laptop and it worked fine, so maybe the problem was something else entirely. Doesn't it seem like we're just guessing without any real proof?
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