Something's really wrong with my pc. Speedfan and Everlast shows that after around 30 minutes of working everything goes too OVERHEATED, and my fan speed increases to abnormal speed!

Temperatures in Celsius:

Cpu - 41 to 55! (Pentium D 3.100 mzh, this should be normal speed)
Axillary - -17 to 70 (Feel III series, probably has no sensor to read tempretarure, but when I touch the case it's definitly too hot)
HDD - 32 - 44
Fan speed: 4116 rpm

The problem is, this happens always, even if I do nothing, the computer is just turned on.

Tensions looks like this:

+12: 3 to 13.79!!!
-12: -0.42 to -0.27?
-5: -4.91 to 1,51!!!

The rest of tensions seem just fine. I know that accepted changes are +/- 5%, so something's definitly wrong.

Auxillary and mainbord (Via series) are brand new, the tension in my home was checked by a proffesional and everything seems fine.

One more thing, my harddrive (samsung ij120hd, 120 gb) shows: Reallocated sector count, backup and replace - this is a phisical error, so it's fatal.

Any ideas what happend? Should I throw everything away and buy a new harddrive/motherboard/etc?[/b]