|
 |
Home |
| |
|
 |
IT Management |
| |
|
 |
Security |
| |
|
 |
Consulting |
| |
|
 |
Practice
Management |
| |
|
 |
Financial Systems |
| |
|
 |
Tricks, Traps, and
Toys (CAI) |
| |
|
 |
Recommendations |
| |
|
| |
|

| |
|
This handout was prepared for a presentation to a Home Owner's
Association Computer Users Group. It was very well received and led to many
specific questions. If you have questions about your computer systems, SAI
is only a phone call away. (480)502-1873 |
|
Why Good Computers Go Bad
|
Virus issues
Many PC’s are not adequately protected from virus attacks. If you are going to
have any contact with the outside world – Email, file swapping, Internet
surfing, you need to keep virus protection up-to-date; that means at least
weekly! For a free virus check go to
www.symantec.com, then to
"Symantec Security Check", then to "Scan For Viruses". This does not check
within compressed files or Email, and it won’t fix a virus.
A good way to reduce virus risks is to block spam email. Most spam
blockers that try to analyze email fail. The best spam blockers succeed by
blocking unknown senders.
Qurb,
|
Application
software doesn’t always fit like a glove
When the operating system is new and only has to deal with a few things, all
seems well. As we add more applications and peripherals, bad things can start to
happen: error messages, slower operation, and failures. The operating system
generally does a good job of keeping track of things, but very often these
software pieces do not play well together. An added installation could produce
conflicts in the Registry (see below), conflicting and inefficient use of
memory, and file use issues. The latest software install may bring with it a
utility file (e.g. a DLL) that is actually older than the one already in your
PC. The result may be that the new application works, but an older application
stops working. Your PC can become bloated with software over time. You may have
plenty of hard drive space left, but the systems operation can be adversely
affected.
|
Today’s software eats up resources
Current software assumes today’s PC resources – plenty of hard drive, plenty
of memory, current peripheral technology. Installing the latest version of Word
or updating your operating system may exceed your PC’s resources and give you
less results, rather than more results. Don’t upgrade automatically. Be sure
your PC will be able to run the newer software.
|
Hard drive
When newly installed, all of your software and files are
laid down on the hard drive in an orderly fashion. Over time, that order turns
into massive disorder. As files are deleted and new files are added, your
programs get broken into segments that can be placed anywhere on the hard drive.
When fragmented, programs take longer to start and run, and files take longer to
load.
|
Your computer is like a
vacuum cleaner
As the PC operates, the fan(s) that cool the power
supply and the CPU are also bringing in dust and debris. Over time this builds
up layers on the components. This insulates the circuitry and makes the system
run hotter. Dust also clogs the cooling system, vents and peripheral devices.
Canned air can clear some dust, but it can also blow it deeper into other
crevices. An outside vacuuming can be helpful but be careful of static
electricity that can harm the components, especially the memory.
|
Cards and connectors may need to be
reseated
Cards and connectors can appear to wiggle out of place. This
can happen when we move the equipment, or replace components. They may have only
been marginally seated in the first place. Contacts may be corroded. The effects
of heating and cooling may make the contact deteriorate, resulting in a
component or the PC itself starting to fail. Firmly reseating the components is
often one of our troubleshooting steps. Take care not to touch the wrong parts
of the cards or memory. Don’t press too hard!
|
Registry
Windows maintains the
Registry, a database of operating conditions and settings that affect the way
the operating system and applications behave. Some settings are
counter-intuitive, and sometimes counter productive. Software installation can
add registry settings that cause unforeseen consequences. Un-installing software
does not always leave a clean Registry. There are utilities to clean and tweak
the Registry. However, this is a risky business as one false move can cripple
your operating system.
|
" Illegal
Operations" and "Exception Errors" are not your fault
These error
messages are your operating system’s way of saying "I’m confused". The operating
system has either encountered a program request it can’t figure out, or run into
data or a program condition that it can’t handle. These can come from bugs, or
from corrupted versions of the programs. Sometimes all that is required is to
reboot. Often, however, it is a sign that software needs fixing.
|
Startup becomes a
free-for-all
When you start up your PC, the operating system looks in
several places for programs and services to start with your computer. These
things either do something to your computer or stay in memory so they can be
instantly used. Unfortunately you have a finite amount of memory. Over time, you
have probably added many things to your "startup" that you actually don’t want
or need. These operations take away memory, which results in slow downs and more
of those error messages and conditions.
|
Fixing what isn’t broken
Not
all maintenance steps make good preventative maintenance. While reseating cards,
you may loosen something else, short something out or break the card. Playing in
the Registry can be like playing with fire. Defragging should be painless, but
be sure that you have stopped all non-essential operating services. Always make
sure you have a good backup before doing any self-surgery.
|
Cookies
are a necessary evil
Cookies are small text files that Internet sites
use to facilitate your use of their site. Unfortunately, they can also have more
sinister uses. . You can severely restrict cookies, but you will also restrict
your surfing options. Keep the cookies in a small cookie jar. Restrict the space
allocated. Clean out old cookies.
|
Spy and tracking
software
Every Internet surfer is being tracked. Cookies, and even spy
software is placed on your PC, often when you least expect it. This can happen
when you inadvertently click a pop-up ad or go to the wrong site while
searching. In theory they are only collecting demographic information, which you
may not want to participate in, but can also be more invasive. There is software
to clean it out the spies; however, there isn’t a perfect way to keep them out
of your PC.
|
Internet downloads
and installs can bring bad visitors
Downloading some little program
from the Internet can be fun and useful. However, beware that you don’t bring
some extra baggage for your computer to handle. A lot of free software carries
with it an ad connection – sometimes something that lives in your memory. Pay
attention to the buttons you click, and the things you say yes to!
|
|
|
| |
| |
| |
| |
| |
| |
| |
| |
| |
|