Archived from groups: alt.sys.pc-clone.dell (
More info?)
First thing I would look for is a new desk or ceiling fan in the room, or
perhaps an old one.
I have also seen this caused by a cell phone DC charger plugged to the same
power strip as a PC system.
"Fred Mau" <fred-dot-mau@comcast.net> wrote in message
news:Xns9686D5706AC82freddotmaucomcastnet@216.196.97.131...
> "Jeff" <Jeff@nospam.com> wrote in news:wJFwe.4150$SQ1.906@fe09.lga:
>
>> I have a Dimension D-300, original video card and monitor. Now fine
>> black horizontal lines flicker on the screen. How can I tell if it's
>> the monitor or video card that's causing the problem? Thanks Jeff
>>
>>
>
> I suspect the video card, I've seen similar things happen with bad video
> ram (VRAM), but I've never seen this happen because of a bad monitor.
>
> - I've seen LCD monitors lose rows or columns of pixels, but they never
> 'flicker', when they're gone they're gone in every case that I've seen.
>
> - A CRT with a bad high voltage section, or with the brightness turned WAY
> too high, might show fine horizontal lines, but white not black.
>
> I've also seen freaky things like this happen with an incorrect or bad
> video driver. You might try updating and/or reinstalling the video driver.
>
> - FM -