Devices Are Not Recognized Under Device Manager (Windows Operating System); Hard Drive(S) Are Not Recognized - Acer Altos G310 MK2 Series Manual

However, they can also be caused by file corruption or changes to the
software configuration.
Check the following:
• If you are running the software from a floppy disk, CD-ROM or
DVD-ROM, try a different floppy disk.
• Uninstall and reinstall the software. Make sure all necessary files
are installed.
• If the problems are intermittent, there may be a loose cable, dirt in
the keyboard (if keyboard input is incorrect), a marginal power
supply, or other random component failures.
• If you suspect that a transient voltage spike, power outage, or
brownout might have occurred, reload the software and try
running it again. Symptoms of voltage spikes include a flickering
video display, unexpected system reboots, and the system not
responding to user commands.
Note:
errors in your data files, they may be getting corrupted by voltage
spikes on your power line. If you are experiencing any of the
above symptoms that might indicate voltage spikes on the power
line, you may want to install a surge suppressor between the
power outlet and the system power cord.
Devices are not recognized under device manager
(Windows Operating System)
The Windows operating systems do not include all of the drivers for
the Intel chipsets, onboard NICs, and other components.

Hard drive(s) are not recognized

Check the following:
• Make sure the drive is not disabled in BIOS Setup.
• Make sure the drive is connected correctly and that is plugged into
the power supply.
• Make sure the drive is compatible.
• Make sure you have not exceeded the power budget for the
server.
Random errors in data files. If you are getting random
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