Polycom ViaVideo manual Video Troubleshooting, Windows Control Panel

Appendix CTroubleshooting

Video Troubleshooting

The following table lists video-related problems, their explanations, and solutions.

Problem	Explanation	Solution
Launching ViaVideo	Either your drivers/hardware	1. Try changing the color
generates the following	do not support DirectX, or	depth and/or screen
error message:	they do not support the	resolution.
“Your video card does not	needed DirectX functionality	2. Upgrade the video drivers
	at your current color depth
support hardware		to the latest version.
	or resolution.
acceleration using the		3. Update to a new video
	In this case ViaVideo
current display settings. For		card.
	reverts to GDI mode, and
optimal performance, set
	remains fully functional, with
your display to 16-bit color
	some loss in performance.
using the Display
properties settings in the
Windows Control Panel.
1. My video appears	The video rendering is	1. Change to a different
fractured when I move.	taking up too much of the	video resolution or color
2. I get scrambled video.	CPU resources because it is	depth.
	either running in GDI mode	2. Update the video drivers.
3. My mouse blinks.	or the video card does not
		3. Update to a new video
4. Windows is running very	properly support
		card.
	DirectDraw hardware
slow.
	acceleration.
5. ViaVideo is taking up
most of my CPU cycles.
1. My video is very blocky.	ViaVideo is having	1. Make sure that you have
2. The ViaVideo window is	problems communicating	the ViaVideo camera unit
	over your USB port.	connected correctly
displayed with an animation
		(power, USB, power is
where the near camera
		on).
video should be.
		2. Remove any unknown
3. Although my hardware is
		devices in the Device
correctly set up, I keep
		Manager under the
getting the message that
		Universal Serial Bus
ViaVideo could not connect
		controllers folder and
to the hardware.
		power cycle the ViaVideo.

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