Jo-Anne said:
I've been wondering if there's a network card that could be going bad.
I've been using this WinXP computer in this spot near the router for
three years, with only a wifi connection, no cable. Until this past
week, it was working fine. Then the internet connection was lost
occasionally--and in the last day much more frequently. It's been
working OK since last night, but the internet connection disappeared
several times during the day yesterday and the computer had to be
rebooted to get it back.
When it happens again, I'll check the network connections.
Thank you.
Jo-Anne
I have an idea. It's Christmas time. Perhaps you received a
new electronics item of some sort ? Something which either
emits in the 2.4GHz band, or something which is actually
a Wifi device. Perhaps a new microwave oven (with leaky door),
a cordless phone for old fashioned copper telephony, some
other kind of wireless device.
Another possibility, is you got a new appliance with metal
body, added to the premises, and it is reflecting the
Wifi signal.
It's probably not interference from a neighbor running
a high power router, because all your Wifi could be
affected in that case.
*******
Some of the single chip Wifi solutions, they "burn out"
and the radio portion of the chip is no longer able to
produce full output. But that usually happens in a period
less than three years. If it's been OK for three years,
chances are the problem is elsewhere. A "good" Wifi design
uses several chips inside a metal can, with each chip type
being selected to do the best job for the function. When
everything is jammed into one chip, they try to do a radio
circuit at 2.4GHz or 5GHz, in CMOS logic gate transistors.
One of the symptoms can be, that people who review the
Wifi product, some say it sucks and some say it is OK<
implying a wide range of RF signal levels out of the
box (they're shipping even the units with weak output).
And then these go downhill in another three to six months
of usage.
If you have a USB3 card added to an older computer,
or just purchased a USB3 peripheral for a new computer
(one with built-in USB3), note that an Intel study shows
the actual USB3 cable and peripheral can put out RF noise.
It is sufficient to stop a Bluetooth wireless keyboard
dongle from working properly. Part of the testing for that
is to re-route the cable and re-locate the peripheral, away
from the RF antenna on any other devices. Or stop using
USB3 entirely, and plug into a USB2 port instead.
You might suspect Intels motivation for releasing such
a report, but we can hope that it leads to better
designed USB3 disk enclosures. Ones with shielding.
Paul