Posted by The Nomad
Occasionally the DELL SX280 Optiplex booted with a BIOS warning "time-of-day" not set. Because the SX280 came from long-time storage, it wasn't really surprising for this to happen. The internal battery was probably depleted. After installation in The Machine the BIOS message came more often, so it was time for a quick CMOS battery replacement. But as usual the battery replacement wasn't that easy after-all.
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