The shop owner who trained me in Rochester said to always swap the CMOS battery on any machine over 6 years old, and it just saved me a callback

Morgan Hernandez · 2026-09-23T10:00:04.410365+00:00

I had a tower come in with random boot errors and a clock that reset every time it lost power, and instead of chasing the RAM like I normally would I pulled the battery and it read 0.4 volts on my meter. Two days after I swapped in a fresh CR2032 the customer called to say it had been solid, which never happens on these old office machines. What is the one check you add to every ticket that most techs skip?

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The shop owner who trained me in Rochester said to always swap the CMOS battery on any machine over 6 years old, and it just saved me a callback | Computer Technicians - nhfree.com