This category accounts for more damage to programs and data than any other. We’re talking about non-malicious software problems here, not viruses. Software conflicts, by
themselves, are much more likely threats to your PC than virus attacks.
We run our PCs today in a complex environment. There are many resident programs (e.g., anti-virus, video drivers)
running simultaneously with various versions of Windows, DOS, BIOS, and device drivers. All these programs execute at the same time, share data, and are vulnerable to unforeseen
interactions between each other. Naturally, this means that there may be some subtle bugs waiting to “byte”
There’s the further problem that not all programs do what we hope they will. If you have just undeleted a file, you don’t really know if all the correct clusters were placed back in the right order. When SCANDISK “fixes” your disk for you, you have no way of knowing exactly what files it changed to
do its job. It becomes even more complex if you use other utilities to do similar tasks.
Software problems happen and can be very serious if you have not taken appropriate action in advance of the problem.
Any time a program goes haywire, there's the risk it may damage
information on disk.
AshuCodes 
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