62 | Troubleshooting
Touchscreen Problems
Specific
Symptoms
What You
Experience
Possible Solutions
Windows 7
Cursor does not
accurately follow
your finger when
you touch the
screen
•
Install touch driver for Windows 7
, see Dell Support
site at:
http://www.dell.com/support/monitors
.
Universal Serial Bus (USB) Specific Problems
Specific
Symptoms
What You
Experience
Possible Solutions
USB interface is
not working
USB peripherals
are not working
•
Check that your display is turned ON.
•
Reconnect the upstream cable to your computer.
•
Reconnect the USB peripherals (downstream
connector).
•
Switch off and then turn on the display again.
•
Reboot the computer.
•
Some USB devices like external portable HDD require
higher electric current; connect the device directly to
the computer system.
SuperSpeed USB
3.0 interface is
slow.
SuperSpeed USB
3.0 peripherals
working slowly or
not working at all
•
Check that your computer is USB 3.0-capable.
•
Some computers have USB 3.0, USB 2.0, and USB 1.1
ports. Ensure that the correct USB port is used.
•
Reconnect the upstream cable to your computer.
•
Reconnect the USB peripherals (downstream
connector).
•
Reboot the computer.
Wireless USB
peripherals stop
working when a
USB 3.0 device is
plugged in
Wireless USB
peripherals
responding slowly
or only working
as the distance
between itself
and its receiver
decreases
•
Increase the distance between the USB 3.0
peripherals and the wireless USB receiver.
•
Position your wireless USB receiver as close as
possible to the wireless USB peripherals.
•
Use a USB-extender cable to position the wireless
USB receiver as far away as possible from the USB
3.0 port.
USB is not
working
No USB
functionalities
Refer to input source and USB pairing table
