Serial Connector Cannot Be Accessed; Usb Device Problems; Software And Driver Problems - Lenovo ThinkCentre M900z User Manual

• Right-click a blank area on the taskbar and open Task Manager. Then, end some tasks you are not
performing.
• Install additional memory modules. To purchase memory modules, go to
http://www.lenovo.com.

Serial connector cannot be accessed

Solutions:
• Connect the serial cable to the serial connector on the computer and to the serial device. If the serial
device has its own power cord, connect the power cord to a grounded electrical outlet.
• Turn on the serial device and keep the device online.
• Install any application programs supplied with the serial device. Refer to the documentation that comes
with the serial device for more information.
• If you added one serial-connector adapter, install the adapter correctly.

USB device problems

This section provides solutions to USB device-related problems.
My USB device cannot be accessed
Solutions:
• Connect the USB cable from the USB connector to the USB device. If the USB device has its own power
cord, connect the power cord to a grounded electrical outlet.
• Turn on the USB device and keep the device online.
• Install any device drivers or application programs supplied with the USB device. Refer to the
documentation that comes with the USB device for more information.
• Detach and reconnect the USB connector to reset the USB device.
I cannot install the Windows 7 operating system using an external USB device
Solution: Go to http://www.lenovo.com/support to download and install USB drivers.

Software and driver problems

This section provides solutions to software- and driver-related problems.
For some programs, dates cannot be sorted in correct order
Solution: Some programs developed before the year 2000 use only the last two digits of a year to sort dates,
assuming the first two digits are 19. Consequently, dates cannot be sorted in correct order nowadays.
Check with your software manufacturer to see if any updates are available. Many software manufacturers
make updates available from the World Wide Web.
Some application programs do not work as expected
Solutions:
1. Check whether the problem is caused by an application program.
a. Ensure that the software is compatible with the computer. Refer to the information supplied with
the software for more information.
b. Verify that other software works correctly on the computer.
c. Verify that the software you are using works on another computer.
2. If the problem is caused by an application program:
.
Chapter 6 Troubleshooting, diagnostics, and recovery
47