SORRY~~忘了補上查詢到的資訊~~

If the message "Possible hardware failure, consult the readme file."
appears in the results.txt file, then prime95's error-checking has
detected a problem. After waiting 5 minutes, the program will continue
testing from the last save file.

Could it be a software problem? If the error is ILLEGAL SUMOUT and you are
running Windows 95/98/Me, then there is some chance that this is a software
problem. A device driver or VxD may not be saving and restoring FPU state
correctly. Windows NT/2000/XP protects prime95 from bad device drivers.
In that case ILLEGAL SUMOUT is very likely a true hardware error. The good news
is that prime95 recovers very well from ILLEGAL SUMOUT errors. Try seeing
if the problem occurs only when a specific device is active or a specific
program is running.