M4A78T-E Voltage and Temperature Sensor Issues

I think my motherboard is having some issues with its sensors. in HWMonitor, it will not display voltage on the 3.3 or 12v rails. The 5.00 is displayed as 5.00. the VCore is at 1.4xx even though it should be at 1.3875. PC Probe displays the 3.3V at 3.53V and the 12V at 12.36 and the bios gives lower readings (3.45 and 12.11) There is also a Temp 3 on Speedfan with -128 Degrees Fahrenheit. My PSU is an Antec SG850 so I don't think that is the problem.

Specs:
M4A78T-E
AMD X3 720 @ 3.3 ghz and 1.3875 V
Asus 4870 1 GB
2x 2GB OCZ DDR3
1x IDE DVD/RW
1x WD10EAVS
Antec P182

BIOS: 1104
OS: Vista 64 Bit Ultimate