cpu reading between 0-35 degrees intermittently

Oct 1, 2018
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i have an amd a8 5600k on a stock heatsync, before i swapped cases i was running temps around 50-75 degrees, when i swapped cases i blew a ton of dust off the heatsync (while holding the fan still) and then i put the mobo back in the new case, i left the heatsync on when i moved the mobo to the new case and when i blew it out, when i got everything transfered to the new case and got it booted up i ran msi afterburner and now my cpu temp reads 0 degrees about a 3rd of the time and spikes anywhere up to 35 degrees now, i was confused so i pulled off the heatsync and cleaned off the old paste, and added about a pea sized dot of tuniq tx-2 and its still doing the same thing