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You can download the video and device drivers from Dell WEB site,the support download page. Make sure you select your model desktop or laptop,better still, type in the Service Tag number, it is printed on the label on thebottom of the laptop and on the back or sides of a desktop. (If the Service Taglabel is missing then go into the BIOS setting and on one of the BIOS pages,the Service Tag number will be displayed). This will open the page where thespecific drivers for your model computer are located. Also make sure you selectthe Windows of the drivers for your Windows operating system. Click on thislink to download the drivers: - http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen
LCD is probably getting dead pixels - in other words, starting to fail. It may be like that for years, or you might see additional lines starting to appear quite rapidly. You might want to look for a replacement LCD sometime soon.
I have seen this problem before, after booting to the external monitor go into the display settings and try setting the resolution to 1024 X 768 and the color settng to 16 bit or preferably 32 bit. If you can do this, then shut down the laptop remove the external monitor and try booting on the LCD display. BPCS
This camera is equipped with the TFT micro display which has about four times the resolving power (number of pixels) of past models.
As a useful mode, it has "Quality mode" of 640x480 pixels (30fps) and "Motion mode" of 640x480 pixels (60fps).
Quality mode: The high resolving power is the most important. The detail parts can be recognized, and it is helpful when the focus is checked. Difficult focusing on the past models can be easy without enlarging.
Motion mode: It is for recording the moving subject. The same number of resolving power is displayed as the quality mode. However, as the pixels are interpolated from 640x240 to 640x480 in Motion mode, the image in the Quality mode looks better.