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Unformatted text preview: en. The only exception to this rule is USB and FireWire deviceswith these
you should always install the driver first. ch08.indd 314 12/14/09 2:49:37 PM All-In-One / CompTIA Network+ All-in-One Exam Guide / Meyers & Jernigan / 170133-8 / Chapter 8
All-In-One Chapter 8: Expansion Bus 315 Figure 8-29 ch08.indd 315 Properly seated expansion card; note the tight fit between case and mounting bracket
and the evenness of the card in the slot. 12/14/09 2:49:38 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 316 Figure 8-30 Part of a Readme file showing the driver version Removing the Old Drivers
Some cards—and this is especially true with video cards—require you to remove old
drivers of the same type before you install the new device. To do this, you must first locate the driver in the Device Manager. Right-click the device driver you want to uninstall
and select Uninstall (Figure 8-31). Many devices, especially ones that come with a lot
of applications, will have an uninstall option in the Add/Remove Programs (Windows
2000), Add or Remove Programs (Windows XP), or Programs and Features (Windows
Vista) applet in the Control Panel (Figure 8-32). Unsigned Drivers
Microsoft wants your computer to work, truly, and the company provides an excellent
and rigorous testing program for hardware manufacturers called the Microsoft Windows
Logo Program. Developers initially use software to test their devices and, when they’re
ready, submit the device to the Windows Hardware Quality Labs (WHQL) for further testing. Hardware and drivers that survive the WHQL and other processes get to wear the
Designed for Windows logo. The drivers get a digital signature that says Microsoft tested
them and found all was well.
Not all driver makers go through the rather involved process of the WHQL and other
steps in the Windows Logo Program, so their software does not get a digital signature
from Microsoft. When Windows runs into such a driver, it brin...
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