If you buy your computers pre-built with the operating system and other software pre-installed, you’ll notice that over time the unit’s operation becomes slower and slower. Eventually things might start to go wrong: Existing programs may crash unexpectedly, new programs that you install may not work properly and/or may affect other programs and/or the operating system itself. Even the operating system itself may seem to start behaving strangely. Why does this happen? In this article I’m going to be looking at the issues from the perspective of a Windows XP Professional user; such as myself.

In a lot of cases the issues arise due to a lack of maintenance. Imagine if you bought a new car but never checked, maintained, or serviced it at all: Eventually it would start to go wrong and eventually break down. A computer is like a car in that it requires constant maintenance. Just like a car won’t work well or long if all you do is fill it up with petrol for a long time, ignoring maintenance; so a computer won’t work well or long if all you do is plug it in and use it for a long time, ignoring maintenance.

In such cases the first thing people normally do is blame their hardware or somebody else. The somebody else is usually a tech; primarily the tech that built it. I once had someone insist that the reason why their machine wasn’t working very fast after they’d been downloading virus-laden files using p2p software and installing pirated software was because I hadn’t built it properly and that it was definitely a hardware fault. – This despite the fact that this person’s computer-literacy was virtually nil, and they had no idea of what went on inside their machine.

Even if the user practices safe-computing to the letter; there’s still a need to maintain the software. If your anti-malware software requires manually updating then do it regularly and routinely; or upgrade the entire program to one that automatically updates. There are free anti-malware programs that update regularly from the internet and will cost you nothing, nada, zilch. The one I recommend is called Avast! .

Even though your anti-malware program may regularly update itself from the web; there are still chances that a new virus might get in before the update occurs. There are also chances that a particular type of malware that’s got into your computer may not be recognised by the program. Always run a full virus-scan at least weekly; using both your installed software as well as an online virus scanner.

There’s also the chance that data residing on your hard-drive, including your hard-drive’s file system itself, can become corrupted. (Especially with Windows.) The more time this is allowed to continue the worse it’ll get; until it eventually becomes noticeable and the user starts suspecting a hardware malfunction after a system crash or some other symptom. I suggest that every month you run the chkdsk program. Although this can be run from the graphical user interface inside Windows; it’s easier to run it from a command line in my opinion: -

Click Start>Run and type chkdsk /r. This instructs the computer to run the chkdsk program which checks the hard-drive for errors. In this case, since you’ve used the /r parameter; it’ll check for any errors that it finds in the file-system and the data, and it’ll do it’s best to repair any errors that it finds. – It’s not infallible but it usually works. If you’re running chkdsk on your primary drive you’ll be asked to reboot so that chkdsk can work while the drive’s not in use.

If you have more than one hard-drive, or a partitioned hard-drive, you may find that you have to specify a drive letter in the command. For example: chkdsk E: /r  This command instructs the computer to run the chkdsk program on drive E: and repair any errors that it finds.

There’s also data fragmentation, which builds up over time. (This only happens with Windows and some Linux distros. It doesn’t happen on a Mac.) What’s going on here?

When Windows writes to disk it writes to the next available space on the disk. If that space is less than the data that it needs to write then it moves on past the data already on the disk to the next available space, where it starts writing again. If it still hasn’t finished writing the file but runs out of space again, then it once again uses the next available space…and so on until the write is completed. As a consequence you end up with several fragments of the file strewn across the disk. Although the system knows where these fragments are, and that they’re bits of a single file; because the information that tells it so is stored in the registry, the read-heads of the hard-drive have to spend longer seeking out and reading all those fragments when Windows wants to access the file again at a later time. If that’s just the one file then it doesn’t make much difference to performance. If it’s lots of files that are fragmented then the hard-drive can take twice as long or more reading them all, and hence performance is slowed down significantly. If it’s a large lot of or all the files that are fragmented them the computer becomes disorientated, sees data errors where there are none due to slow read-times, and crashes. Also the amount of strain on the hard-disk’s mechanisms can vastly increase reading fragmented files; therefore the lifetime of the drive decreases with use.

You can buy programs that automate the defragmentation process. I personally recommend Diskeeper for this purpose. Although it’s paid-software, you can currently use the software free for 30 days trial if you’d prefer to try it out first.

If you’re not using automated defragmentation-software, however, you should manually defragment your hard-drive at least weekly. Failure to do so will result in impaired system performance and eventually a BSOD if you leave it long enough.

Finally the obvious: If you run pirated software you’re breaking the law and are liable for prosecution if found out. Also pirated software might contain corrupted data and/or viruses/spyware/keyloggers. It might also use techniques to bypass the program’s anti-piracy measures that are detrimental to your computer hardware. If you insist on running pirated software than be prepared for anything to go wrong.

If you use p2p software; even if you don’t make illegal downloads, be very careful what you download: There are viruses out there that can get into your system and disable all of its protection; leaving it vulnerable to any and all kinds of attack.

Your computer is a machine: Like any machine; including your body, if you don’t maintain it then it WILL fall into disrepair and eventually break down.

Please comment.

*I am not currently at time of writing affiliated to Avast! or Diskeeper: Therefore whether or not you use these products; I will not gain or lose anything.