Solving Problems with Your Computer
Troubleshooting Techniques
106 Reference Guide
HP notebook TFT displays meet or exceed all HP standards for cosmetic quality of TFT
displays. HP does not warrant that the displays will be free of cosmetic imperfections.
TFT displays can have a small number of cosmetic imperfections and still conform to
HP’s cosmetic quality specifications, including the following:
• No more than 6 pixels remain on (always one color, such as white, red, green, or blue
dots).
• No more than 6 pixels remain off (always dark).
• No more than a total of 8 pixels stuck on or off.
• No other stuck pixel within 15 mm of a stuck pixel.
Contact HP Customer Care if you have a display quality problem and require a more
comprehensive explanation of HP display quality—see “To call HP for service and
support” on page 95. We expect that over time the industry will continue to produce
displays with fewer inherent cosmetic imperfections, and we will adjust our HP
guidelines as these improvements are implemented.
Hard disk drive problems
The hard drive’s reported capacity is less than its actual size
• The hard disk drive is preconfigured to allocate some space to diagnostic software,
which is used in support and service of your computer. This part of the hard drive is
unavailable for other uses, and so is not included in the capacity of the hard drive as
reported by Windows (My Computer, Properties).
If the computer’s hard drive doesn’t spin
• Make sure the computer has power. If necessary, connect the AC adapter, making
sure it is plugged into a power source and into the rear of the computer.
If the hard disk makes a buzzing or whining noise
• Back up the drive immediately.
• Check for alternate noise sources, such as the fan or a PC card drive.
If files are corrupted
• Run the virus-scanning program.
• In Windows 98, run the ScanDisk surface scan to check the platter: click Start,
Programs, Accessories, System Tools, ScanDisk.
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