A user cannot access the Internet. The PC has a valid IP address. After you replace the network card, the problem persists. According to the troubleshooting methodology, what should you do next?
Replace the network card again with a different brand.
Inform the user they need a new computer.
Establish a new theory, such as checking the network cable or router, and test it.
Assume that the Internet service is down and wait for it to come back on its own.
Because replacing the network card did not restore connectivity, the original theory is disproven. The next step in the CompTIA troubleshooting process is to establish a new probable cause-such as a faulty cable or router-and test that theory. Replacing identical hardware again, telling the user to buy a new computer, or simply waiting do not follow the methodology.
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What is the purpose of establishing a new theory when troubleshooting?
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How do you know if the network cable or router could be the issue?
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What does 'escalating to a higher level of support' mean in troubleshooting?