Yes, it may be the file truly is just corrupt. However, the conclusion that the hard disk needs to be replaced is premature. There are many things that might cause a bit, byte or even a sector to be written incorrectly. Throwing out the baby with the bathwater is an inefficient waste of time and money.

And, the use of utilities that remove temporary files from one's system have shown time and again to not only free up disk space, but to clear up many problems that users might encounter while operating application in a Windows environment.