1 Disconnect all external devices from your computer except the keyboard and mouse. If you have an Ethernet cable connected, disconnect it.
2 Insert the "Additional Software & Apple Hardware Test" disc that came with your computer.
3 Restart your computer and hold down the "C"key as it starts up. A list of available startup volumes appears. Click Apple Hardware Test and click the right arrow.
4 When the Apple Hardware Test main screen appears after about 45 seconds, follow the onscreen instructions.
5 If Apple Hardware Test detects a problem, it displays an error code. Make a note of the error code before pursuing support options. If Apple Hardware Test does not detect a hardware failure, the problem may be software related.
For more information about Apple Hardware Test, see the Apple Hardware Test Read Me file on the "Additional Software & Apple Hardware Test" disc.
To access the information in System Profiler, choose Apple (K) > About This Mac from the menu bar and then click More Info.
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You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.