I have same problem with 6400 (which seems to be same as E1505, just for small business). Talked to tech support, for some reason they thought this to be a hardware issue. First, they changed motherboard. Then videocard. Nothing changes. I am using 32-bit XP, SP2. It has ATI X1400. And, ATI drivers would not install, ATI says "it is OEM card, go to your computer manufacturer". Guess last time I buy Dell...
Just did (via manual uninstall thohg), it is better now, thanks for the advice! It still blanks each of the monitors twice when comoing out of the screensavver, but "random pixels on the screen" moment is gone. We'll see if it will reappear.
My E1505 has had two kinds of "flickering" symptoms. One occurs at login. The screen goes black a few times before seeming to settle down.
More recently I installed Office 2007. When I use the drawing features, the screen begins to flicker quite frequently, say once every second or two.
This is NOT the typical 60hz refresh rate flicker. This is far more pronounced.
I have the Intel 945GM graphics card. Unfortunately, it only gives acceptable results when set at maximum resolution and 32 bit depth. Anything less, and the graphics and fonts look like they are produced by a 1988 era computer... very fuzzy.
I've tried the following (aside from changing screen resolutions, hardware acceleration, color depth and any other tweak I can find):
upgrading bios upgrading graphics driver downgrading graphics driver assigning more RAM to the card
Nothing works. My "old" dell inspirion 700 had a much better screen!
Any suggestions other than giving up and buying a different computer?