This is because the current CPU fan rpm is lower than the "Fan Low Limit" set, therefore a warning sign will appear. This can be corrected by going into EasyTune5 then in "Settings" under "PC Health" you will see an option where you can set the Fan low limit for the CPU fan, please make sure it is set to lower rpm than the current CPU fan speed.
When using Windows XP, some system driver or software will require Service Pack to function properly. In some cases the .NET service platform will need Service Pack updates. For example: USB2.0, HD Audio, ATI Control center. If you are asked to update or install Service Pack while working on your system, please use Windows Updates or kindly contact Microsoft for the necessary updates.