WHEN GOOD COMPUTERS GO BAD
Personal computers are complex devices. We use them every day to do
so many things and quite frankly, I don't know how I got along
without one back in the olden days (that's the 70's in case you were
wondering). Their complexity makes all the things they do possible
but it's also that same complexity that can be the source of a great
deal of frustration. Everything on a computer must work and
work well together with each other. If something malfunctions,
you're going to know it pretty much right away.
When something does go wrong on a computer, you would think that the
problem would be fairly obvious and in many cases it is. If the hard
drive crashes, if a key on the keyboard gets stuck or behaves
erratically, if your screen becomes pixilated or erratic, you can
pretty much respectively assume it's the hard drive, your keyboard
or the graphics card that needs attention.
But then there's the type of malfunction that's the stuff of
nightmares and it's name shall be known as the "Intermittent
problem." Intermittent problems are the hardest to diagnose simply
because it's really hard to fix something that isn't broken. This
heralds back to those days where you would call the TV repairman to
come fix your TV set only to find that when he showed up, the TV
would be working just fine. He'd check it out and find nothing wrong
with it, making you feel like an idiot. After he'd leave, of course
the TV would malfunction again. The only thing you could do at that
point was to let him take the set to his workshop where he would let
it run for days until it acted up or finally give up the ghost. At
that point, it could be fixed. Unfortunately, computers have
inherited that intermittent legacy but on an even worse scale. But
the answer remains pretty much the same. Sometimes you just have to
let it run until the problem can be observed by a professional.
Failing memory can be the source of intermittent grief. The symptoms
can be really hard to nail down and too often a computer virus or
similar type of malware is usually the first suspect. After the
malware option is discounted, a memory test is the next step.
Running a simple RAM test may not show that something is wrong as an
intermittent memory problem might fool the testing software.
Typically a good RAM test requires running for several hours, even
overnight. So when an intermittent hiccup does occur, the problem
will be reported so the identified memory can be replaced. But
there's one other component inside your computer that can make even
the worst intermittent memory problem look like a CD rainbow.
Imagine how you would feel when any of your working programs start
failing and each time the malfunction differs. And it's not just
your software. Different hardware components in your system begin to
fail, then work again. Connected USB devices begin acting
unpredictably, video cards act erratically, your Wi-Fi connections
misbehave, the list can go on and on. As you experience these
intermittent erratic behaviors, you might think your computer has
been possessed by some abhorrent technology spirit and the only
recourses left to you are an exorcism or buying a new PC. But there
is one component inside your PC that can cause virtually any and all
of these intermittent problems and in fact, if any of these things
do begin happening, you will now be prepared to deal with it. It's
your power supply that's going bad.
A failing power supply can cause the required power levels of memory
or any other component to drop just enough and cause them to
malfunction. But the insidious part is that a failing power supply
may monetarily recover and everything will work perfectly once
again. That's the really bad part to this whole scenario. It would
be a lot more merciful if the darned thing just died. But a slowly
dying power supply can mimic so many computer ailments that it can
fool even some of the best of us out there. So don't feel too bad if
it happens to you. Just be sure to add a failing power supply to
your list of diagnostic considerations.
Power supplies come in all shapes, sizes and power ratings.
Replacing a power supply isn't for the faint of heart and should be
done by someone who has some qualified experience. If you do need to
have yours replaced, it might be a good idea to replace it with one
that has a higher power rating than the one that came with your
computer. Newer add-on cards and devices typically have larger power
requirements so adding in a beefier power supply will insure your
computer will run longer and be able to handle your growing demands.
Also make sure the power supply comes from a reputable manufacturer
that can back it up with a good warranty. Now you have the power.
| Craig Crossman is
a McClatchy-Tribune newspaper columnist writing about computers and
technology. He also hosts the nation's longest running nationally syndicated radio talk show on
computers and technology, Computer America, heard on both the Business TalkRadio
Network® and the Lifestyle TalkRadio Network®, weeknights at 10PM Eastern
time. Visit his website at http://www.computeramerica.com |
Jump to:
[ Index of Craig's Columns | Main
Columns Page | Computer America Home Page ]
|