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I keep a PCI video card in my kit because every computer made in the past ten years has PCI slots If you run into a system with video problems, you can almost always simply slap in the PCI video card and discover quickly whether or not the AGP or PCIe video card or card slot is a problem If the computer boots up with the PCI video card but fails on the AGP card, for example, you know that either the AGP card or slot is causing the problem
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In many troubleshooting situations, it s important to back up critical files before making changes to a system To some extent, this is a matter of proper ongoing maintenance If you re in charge of a set of machines for your company, for example, make sure they re set to back up critical files automatically on a regular basis If you run into a partially functional system, where you might have to reinstall the OS but can access the hard drive, then you should definitely back up essential data, such as e-mail, browser favorites, important documents, and any data not stored on a regularly backed-up server Because you can always boot to a copy of Windows and go to the Recovery Console, you should never lose essential data, barring full-blown hard drive death
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The CompTIA A+ certification exams assume that all techs should back up systems every time before working on them, even though that s not how it works in the real world
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Troubleshooting a computer problem can create a great day for a computer tech if he or she goes about solving it systematically and logically Too many techs get into a rut, thinking that when symptom A occurs, the problem must be caused by problem A and require solution A They might even be right nine times out of ten, but if you think this way, you re in trouble
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Dead hard drives retain their data, so you can recover it if you re willing to pay a lot of money Having a good backup in place makes a lot more economic sense!
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Typical technician toolkit
20: The Complete PC Tech
when the problem is really Z and requires a completely different solution What do you do when the fix doesn t work and you re sure it s got to be problem A Your customer won t be happy, you ll end up frustrated or embarrassed, and you still won t have the problem fixed Follow the right methodology: analyze, test, and complete your task
Analyze
Everything starts with analyzing the problem Because you know how the process should work, when you run into a computer problem, the first question you should ask is, What can it be Don t limit yourself in the initial analysis, but examine all possibilities Make sure you understand the nature of the problem first A big portion of the initial fact-finding involves talking to the user with your newly-honed customer communication skills Practice asking friendly, factual questions to get the results you want When you run into big problems, such as a completely dead PC, or some weird issue that involves networking as well as a local machine, break the problem down into smaller parts For a dead PC, for example, organize your inquiry into categories, like this:
Power Check the AC connections and power switches on the power supply and UPS or surge suppressor Connectivity unplugged Check inside the box to make sure nothing is
CMOS If you ve got power (you see an LED lit up, for example), then check CMOS to see if the hard drive shows up Operating system If you have some life in the PC, but get no boot option, then try booting to the CD and running the recovery console Check to see if you can access the hard drive If you have a boot option, then try booting to Safe mode or Last Known Good Configuration
By breaking the problem into discrete chunks, you make a big problem more manageable You can determine whether the problem is caused by a hardware failure, connection problem, or perhaps an issue with the operating system or other software
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