I have this Dell Latitude 600 laptop, It works for about 30 minutes and then freezes...It has win98 on it freshly installed....I have tried reinstalling the OS and it still freezes, now it freezes about every 15 minutes....can't find anybody else to help me with this problem...When I run diagnostics on it it tells me that SMBIOS -Environment Inf.:FAIL with a status:Failed status Code

OS DDG-D 020 026:FAIL
then it says Unable to access device state.SMI handler returned an error while trying to retrieve the device state... Device number:1 Description:CPU Internal Temperature......Does this mean I need a new fan? Please help...