Software Problems; Universal Serial Bus (Usb) Port Problems; Solving Power Problems - Lenovo 5457 Installation And Service Manual

Software problems

Table 28. Software problems and actions
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If an action step is preceded by "(Trained technician only)", that step must be performed only by a trained
technician.
• Go to the Lenovo support website at
tips, and new device drivers or to submit a request for information.
Symptom
You suspect a software
problem.

Universal Serial Bus (USB) port problems

Table 29. Universal Serial Bus (USB) port problems and actions
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If an action step is preceded by "(Trained technician only)", that step must be performed only by a trained
technician.
• Go to the Lenovo support website at
tips, and new device drivers or to submit a request for information.
Symptom
A USB device does not work.

Solving power problems

Use this information to solve power problems.
Power problems can be difficult to solve. For example, a short circuit can exist anywhere on any of the power
distribution buses. Usually, a short circuit will cause the power subsystem to shut down because of an
overcurrent condition. To diagnose a power problem, use the following general procedure:
Lenovo System x3100 M5 Installation and Service Guide
146
http://www.lenovo.com/support
Action
1. To determine whether the problem is caused by the software, make sure that:
• The server has the minimum memory that is needed to use the software. For
memory requirements, see the information that comes with the software. If
you have just installed an adapter or memory, the server might have a
memory-address conflict.
• The software is designed to operate on the server.
• Other software works on the server.
• The software works on another server.
2. If you received any error messages when using the software, see the
information that comes with the software for a description of the messages and
suggested solutions to the problem.
3. Contact the software vendor.
http://www.lenovo.com/support
Action
1. Make sure that:
• The correct USB device driver is installed.
• The operating system supports USB devices.
2. Make sure that the USB configuration options are set correctly in the Setup
utility (see "Using the Setup utility" on page 89
3. If you are using a USB hub, disconnect the USB device from the hub and
connect it directly to the server.
to check for technical information, hints,
to check for technical information, hints,
for more information).