The Hard Disk is okay. The sensor is defect. Thursday I restored the station (independent restorepoint) E:\ with Windows XP (SP3) to 15-01-2010 with Ghost 14.0. This is the last back-up before I installed and worked with NU. Now the computer is working good and it is clear to me that NU damaged the register, Windows Files or the stuurprogramma's (drivers). I'm sorry but that are the facts.
The problem is solved and you understand that I won't install NU anymore. Thanks for your help.