HP Book 900 manual Accessories, Call Center Suggestions

Symptom

Computer pauses or runs sluggishly

Accessories

Docking product I/O problems

Call Center:

Suggestions

May be normal Windows behavior (background processing can affect response time).

If the hard disk has spun down to conserve power, it can take several seconds to spin up. You can hear this. You can run BIOS Setup and change the hard disk time- out to match the Suspend time-out.

Certain background operations (such as HP COE virus scans) can affect performance while they’re running.

Some file browsers may be unresponsive while they’re processing a graphic image or waiting for broken network connections to time out.

Check for overheating—see the previous symptom.

Run BIOS Setup and try turning off smart CPU mode.

Check that ac power is connected.

Check settings in BIOS Setup.

Try using the corresponding OmniBook port.

Repair Center:

Likely Causes

CPU module. Motherboard. Thermal connections.

Docking product. Motherboard.

Repair Center:

Comments

If computer slows after a period of continuous activity, check thermal connections and parts—see the previous symptom.

Test the corresponding OmniBook ports while undocked.

The port replicator and mini dock are not repairable—they must be exchanged.

The docking system is repairable—see its service manual.

Can not boot from CD in CD-ROM drive

General plug-in module problems

Check that the CD is bootable.

During boot, do not press ESC before the F2 prompt— or check boot order in BIOS Setup.

Check contacts on the module, in external bay, on cable, and on OmniBook connector.

Push system-off button and reboot.

CD-ROM drive. External module bay.

Plug-in module or contacts.

External module bay. Motherboard.

The CD-ROM drive is not repairable—it must be exchanged.

Plug-in modules are not repairable—they must be exchanged.

HP OmniBook 900 Troubleshooting and Diagnostics 3-11