Unformatted text preview: ou decide what to look for and how to deal with the problem.
The Device Manager provides the first diagnostic and troubleshooting tool in Windows. After you install a new device, the Device Manager gives you many clues if something has gone wrong.
Occasionally, the Device Manager may not even show the new device. If that happens, verify that you inserted the device properly and, if needed, that the device has
power. Run the Add/Remove Hardware Wizard and see if Windows recognizes the device. If the Device Manager doesn’t recognize the device at this point, you have one of ch08.indd 321 12/14/09 2:49:40 PM All-In-One / CompTIA Network+ All-in-One Exam Guide / Meyers & Jernigan / 170133-8 / Chapter 8 CompTIA A+Certification All-in-One Exam Guide 322 two problems: either the device is physically damaged and you must replace it, or the
device is an onboard device, not a card, and is turned off in CMOS.
The Device Manager rarely completely fails to see a device. More commonly, device
problems manifest themselves in the Device Manager via error icons—a black “!” or a
red “X” or a blue “i.”
• A black “!” on a yellow circle indicates that a device is missing (Figure 8-37),
that Windows does not recognize a device, or that there’s a device driver problem. A device may still work even while producing this error.
An “!” in the
problem with the
selected device • A red “X” indicates a disabled device. This usually points to a device that’s been
manually turned off, or a damaged device. A device producing this error will
• A blue “i” on a white field indicates a device on which someone has configured
the system resources manually. This only occurs on non-ACPI systems. This
symbol merely provides information and does not indicate an error with the
The “!” symbol is the most common error symbol and usually the easiest to fix.
First, double-check the device’s connections. Second, try reins...
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