system processes taking all the CPU, battery replacement problem?
MacBook Air early 2014 Dual Core i5
MacOS 11.7.2 Big Sur
I replaced the battery (iFixit) and the machine worked fine for awhile, but now it's unusable because system processes (as seen in Activity Monitor) are hogging the CPU.
No liquid damage, BTW
Did the usual, battery recalibration, SMC/PRAM reset, ran Disk First Aid, Diagnostics (says SMC and camera error), and re-installed the OS (but didn't erase the disk first).
SMC error code PFM006
PMS error code PPN001
Any suggestions?
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