tower no longer recognizing second monitor

February 3, 2011 at 14:33:23
Specs: Windows 7
I have an HP e92030f with two (I-Inc iH182) monitors. I just performed an avast anti virus scan (full scan, then boot scan) and after the system restarted, it stopped recognizing my second monitor. My second monitor is connected via USB but has never had problems. all equipment is one year old, so I know it's not an equipt failure

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February 3, 2011 at 14:41:32
"My second monitor is connected via USB"

Is that even possible? If it is more than likely the Avast saw the driver for the monitor as a virus and removed it. Reinstall the drivers that cam with that USB graphics card.

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February 3, 2011 at 15:22:06
yeah, reinstalled the driver and it is turning on, but still has no picture and won't let me drag anything over to the 2nd screen.

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February 3, 2011 at 20:33:34
Windows often displays on only one display by default.

RIGHT click on a blank part of the desktop screen, select Personalize, then Display Settings. Place your cursor over the two displays, one at a time. For the one that shows Not Active or similar, RIGHT click on it and activate it or similar.

If that works, if you leave the USB cables for the monitors plugged in when Windows is running, Windows will retain both displays.
If you unplug one of them and then run Windows with it unplugged, you will have to do the same thing again the next time you plug it in.

If that doesn't help, you need to plug the monitor you are not getting the display on into a different USB port, or you need to use a different USB cable.

Troubleshooting USB device problems
See Response 1:

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