Depending on the program I am running, happens on the web a lot, the whole screen will start flashing like a strobe light. Not just the browser, the whole screen. Sometimes if I scroll down it will stop, other times it won't. It's driving me insane!!! I have a dell Latitude 800, ATI card, and screen res set at 1280 x 1024.
Try moving your LCD toward it's open and closed positions. Does this seem to affect the flickering? What Operating System are you using? Approximately how recently did you first begin to experience this problem and do you remember making any hardware or software changes to your configuration directly previous to this first occurring?
It is running windows 2000, no moving the lcd does not work. It has done this since we got it 2 years ago. It does not do it on every web site, only certian ones and it does not do this on regular applications. Both netscape and explorer seem to cause this problem. Pizzahut.com is an example of one of the sites it freaks out on. It flashes so fast on that page that unless I can manage to get the cursor to close the window or get the page scrolled down about half way, it is unreadable. The windows menu bar at the bottom is included in the flashing.
Does changing the resolution and/or color depth seem to help? I would recommend attaching an external monitor to the system and setting it to be the primary display device. Press your Fn and F8 keys simultaneously until the image only appears on the external display, then see if this particular website exhibits the video anomaly.
I would also recommend using the Dell Diagnostics disk to test your video subsystem. Just insert your Dell Diagnostics disk into the floppy drive and reboot the system. If you do not currently have this disk on hand you can download a file which will recreate the disk for you from our website. Just go to our website at the following address:
<ADMIN NOTE: Broken link has been removed from this post by Dell>
Insert your system's service tag in the text box labeled "System Service Tag" and click the "Go" button. You will be given a list of files and drivers specific to your system. Click on the "Diagnostics Utilities" category and then download the latest file to your desktop. Double click on the file and you should be asked to insert a blank, formatted diskette. Once this bootable disk has been created, restart your system with the disk still inserted in the diskette drive. The diagnostics program should automatically begin to load.
Note: If your system came with a Diagnostic CD, go into the BIOS and set the CD to boot first, then reboot with the Diagnostic CD in the CD-ROM drive.