She never figured out if it was a hardware ghost, a placebo, or if F23 had left something behind. Something that never really got erased. Something waiting for the next update.
Your download may be corrupted or for a different sub-model. Verify the MD5 checksum from the manufacturer’s site. Also, ensure the AC adapter is original (some Insyde BIOS revisions reject non-OEM chargers).
: Some versions of F.23 specifically improve system performance when the device is running on battery power . Performance Review