CPU temp fluctating like crazy

cupcakecult

Honorable
Feb 5, 2014
2
0
10,510
Hey.
I build my own pc about a year ago, and everything worked fine untill yesterday. It suddenly gave me a few BSOD while i was simoly browsing. After a little bit of research, i found out that the temperature of the cpu is not stable. When i start the bios(after having the pc off for 2 hours to let it cool) it showed me 30c, and jumped to 80c in 2 seconds. When starting windows it also quickly goes from 30 to 70, back to 25 and again up to 70. When i opened the browser it went to 70, then a second later 80, 90 and another BSOD. All fans(1 in, 2out, cpu, double gpu and powersupply) are working correctly at the right speeds. I don't know what's wrong, could somebody help?
 
if it an intel cpu check that the heat sink legs are on tight. as a teck the intel cpu cooler sucks as it can pop off the mb without much force. if the cooler on tight then your thermal paste may have gone dry or your cpu fan not spinning up to speed.
 

feelingtheblanks

Honorable
Jan 3, 2014
412
0
10,960
Try re-applying the thermal paste and reseating the heatsink to see if that helps with temperatures.

On the other hand; 70C isn't enough to cause a BSOD by itself. There might be another issue here. Check your PSUs voltage values if you have a multimeter or atleast with a monitoring software like HWMonitor or HWInfo, also try running with one stick of RAM and without the gpu if you have an integrated one.