Bad CPU temp reading

[Ryan_Fpv]

For some reason today my CPU temp has decided to go screw itself up on me.
It was working fine every since I got it, last night it was showing about 25*C on idle and 46*C @ 100% (with Everest's stability test).
When I first looked it was showing at -128*C. I checked the Bios and it said it was running at -10*C. Turned it back on and now everest is saying -20*C. Obviously these readings are incorrect. Also, my motherboard is about 10*C hotter than it normally is.
I just want to get this fixed, so any help will be appreciated. All my hardware is in my sig.

Everest Ultimate (5.5):
Sensor Properties:
Sensor Type ITE IT8720F (ISA 290h)
GPU Sensor Type Diode, Volterra VT1165 (ATI-Diode, 70h)
Motherboard Name Gigabyte H55 / H55M / H57M / P55 / P55A / P55M Series
Chassis Intrusion Detected Yes

Temperatures:
Motherboard 41 °C (106 °F)
CPU -20 °C (-4 °F)
CPU #1 / Core #1 42 °C (108 °F)
CPU #1 / Core #2 42 °C (108 °F)
CPU #1 / Core #3 42 °C (108 °F)
CPU #1 / Core #4 42 °C (108 °F)
GPU Diode (DispIO) 49 °C (120 °F)
GPU Diode (MemIO) 61 °C (142 °F)
GPU Diode (Shader) 54 °C (129 °F)
GPU VRM 50 °C (122 °F)
Seagate ST31000528AS 31 °C (88 °F)

 

[Ryan_Fpv]

Strange... I turned my computer off for 30 minutes. Turned it back on, bios displayed 37*C. Loaded into windows started up everest and it's showing 27-29*C. These are the temps I have normally been getting.
Could it have fixed itself? Seems too good to be true...

 

[CardboardSword]

When in doubt, reboot? Might have been a glitch somewhere along the line that was fixed by a power cycle? Who knows? Just be happy its gone and pray it stays that way

 

[porterjw]

Strange... I turned my computer off for 30 minutes. Turned it back on, bios displayed 37*C. Loaded into windows started up everest and it's showing 27-29*C. These are the temps I have normally been getting.
Could it have fixed itself? Seems too good to be true...

Yes, i could have fixed itself. Sometimes programs like that give strange errors that go away after a few Power-up cycles. SpeedFan is notorious for that with certain setups, also. After a while though, things appear kosher.