tester1234

Thanks a lot for your comment I really don't know WinPE cannot run over 24 hours... is this spec mentioned somwhere on Micorsoft's documents ?

Does anyone know the ACPI thermal related methods such as _PSV(CPU clock throttling) and _CRT(critical shutdown) are still useful in WinPE environment or not? I think this issue is very important, becuase if WinPE is used for some long-run purpose, the hardware may be damaged if there's no thermal protection in ACPI.