6
A client's old PC booted after I swapped the CMOS battery, which I didn't think would work
Had a 2012 Dell Optiplex come in last week that wouldn't post at all, just a black screen. The owner said it had been sitting for a year. On a whim, I pulled the old CR2032 battery and put in a fresh one from my kit. It booted right to the login screen. I always thought a dead battery just caused time errors, not a total failure to boot. Has anyone else seen a CMOS battery cause a complete no-post situation on older boards?
3 comments
Log in to join the discussion
Log In3 Comments
leo6671mo ago
Check the battery voltage under load.
1
patricia9051mo ago
Ever try that? My multimeter showed a big drop when the starter kicked in.
2
david_taylor691mo ago
Cleaned the terminals and it fixed my voltage drop.
6