I've been using my rig for a couple of months now without incident. I'm running 2x r9 290x on watercooling. Normal temps under full load never exceed 75c.

Yesterday though, my temps are fluctuating wildy from 60 to 95c within seconds. Going up, throttling then goes down. Repeat cycle.

I do not know what is wrong. If its with the temp probes or with the water pump. Can you kindly refer me to a water cooling technician? Thank you!