Lab Exercise 202: Examining User-Accessible Components in Software

Drawer EAN13 in Software Lab Exercise 202: Examining User-Accessible Components

Lab Exercise 202: Examining User-Accessible Components
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Step 5 Now you re going to simulate a PC that has become nonresponsive and locked up Perform a forced power-down as follows:
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1 Press and hold the power button 2 While continuing to hold the power button in, count out loud (one-one thousand, two-
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one thousand, three-one thousand ) until the system powers down and the screen goes blank According to your count, how many seconds did it take for the screen to go blank _____________________________________________________________________ Step 6 After the system has been powered down for approximately one minute, do the following:
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1 Press the power button and allow the system to boot
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Did the system boot properly ____________________________________________
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2 Log on in a normal fashion so that you are viewing the operating system desktop
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Were you able to log on as normal ________________________________________
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3 Use the mouse to select Start | My Computer, and double-click the CD-ROM drive icon
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This should enable you to view the contents of the data CD that was installed prior to the forced power-down List some of the contents of the CD-ROM: _______________________________________ _____________________________________________________
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4 Use the mouse to select Start | Shut Down In the Shut Down Windows box, select Shut
down from the drop-down list This performs a graceful shutdown of the system
Hint
If all of the above actions were successful, you can probably be assured that the system is stable, and you can report to the IT manager that Jane s computer is back up and running If any of the steps failed, you should use the mouse to select Start | Shut Down In the Shut Down Windows dialog box, select Restart from the drop-down list After the system reboots, you may complete Actions 2, 3, and 4 once more Sometimes, the forced power-down leaves some of the les in a state of ux; restarting shuts the computer down gracefully, properly closing all open les before powering down This should clear everything up and enable the computer to function properly
Step 7 While the computer is turned off, pretend you lost power and must remove the CD from the drive without power Use a paperclip as noted earlier in the Hint to remove the CD
2: The Visible PC
Step 8 As a technician, you need to understand the keyboard, because it is still one of the most important human interfaces on a PC Look at the way your keyboard is laid out: It basically has three main sections, with some extra keys thrown in for good measure (see Figure 2-3) The largest area of the keyboard is the standard QWERTY (pronounced kwerty ) letter key layout, which is familiar to touch typists everywhere If you never took a typing or keyboarding class, you may be wondering what I mean by QWERTY; it s simply the standard keyboard used in the United States and most English-speaking countries, so named for the rst six letters in the top row of letter keys To the right of the letter keys, you ll usually see a square numeric keypad similar to those found on old adding machines This feature is popular with people like accountants and merchants, because it makes entering numbers quicker and easier Above the letter keys, you ll nd a special row of keys called function keys, normally labeled F1 through F12 What these keys do depends on the software you re using when you press them; pressing the F1 key, for example, generally calls up a program s Help feature Function keys are used for various tasks, including accessing basic system settings at startup You ll use the function keys a lot when troubleshooting a downed system In the keyboard s upper-left corner, next to the function keys, you ll see the Escape key, labeled In many programs, particularly older ones, pressing this key backs you out of what you re doing, sometimes even causing your current program to close down In more modern software, pressing ESC is a way to make a program let go of some text or graphic you ve selected, or to close the current dialog box without implementing any changes
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