There are a wide range of problems that can affect the Acer 4720Z laptop. The best resource for troubleshooting issues are the support sections of the Microsoft and Acer websites.
Hardware Issues
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Hardware issues can include a laptop that won't power on, a faulty screen, or an unresponsive Acer Aspire 4720Z Keyboard. Check the battery is fully charged and the correct adapter is being used. In some cases, the faulty component may have to be replaced.
Software Issues
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Software issues can include freezing or crashing programs, or being unable to load the operating system. In the most serious cases, you may have to restore the operating system to its default configuration using the recovery discs supplied by Acer.
Hard Disk Failure Messages
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Acer Aspire owners may encounter a message indicating that no fixed disk is present. While this message can be caused by a number of things, it is often an indication that the hard drive has failed or soon will. The best way to verify the status of the hard drive is to restart the computer and press Acer Aspire 4720Z Keyboard the "F2" key during startup. Once the setup utility comes up, go to the diagnostic menu and run a test on the hard drive. If the hard drive shows physical errors it will need to be replaced. Try to boot your laptop again, and if you are able to log on be sure to back up your personal data immediately.
Date and Time Errors
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If a date and time error is noted when starting your Acer Aspire, press the Acer 4720Z Laptop keyboard "F2" key to enter the setup utility and set the date and time. Be sure to watch the date and time listed on the lower right hand side of the system tray each time you log on. If the laptop continues to lose time or the date and time error reoccurs, the internal CMOS battery may be failing. This battery will need to be replaced by an authorized Acer service center.
Display Problems
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If the display on your Acer Aspire laptop is blank and you are using a docking station or an external monitor, press the "F5" function key to toggle the display back to the laptop display. If the display still does not come on, use Acer Aspire 4720Z Keyboard the "F6" and "F7" keys to adjust the brightness levels. If adjusting the brightness level does not work, look at the power indicators on the front of the unit and make sure they are lit. If the power indicators are not lit, check the status of the AC power on the laptop. Your battery power may be running low, and connecting the laptop to AC power should allow it to start normally.
Other Issues
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A Web search relating to your specific problem will turn up matches from the Acer and Microsoft support sites. You should also consult the troubleshooting section of the user manual, and make sure that your Microsoft Windows operating system, software applications and hardware drivers are all up-to-date.
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