You’ve pressed the power switch to a computer, but there are no sounds or lights coming from the system. You’ve checked the power outlet with a multimeter, and the outlet is properly powered. You’ve also checked the end of the power cord that inserts into the power supply, and the power cord is properly powered. What’s the next step to help troubleshoot the problem?
A) Replace the power supply
B) Use a multimeter to check a Molex connector
C) Replace the motherboard
D) Use a multimeter to check the power supply’s 24-pin motherboard power connector
The answer: D) Use a multimeter to check the power supply’s 24-pin motherboard power connector
At this point of the troubleshooting process, we’re still not sure if the problem is related to the power going to the motherboard or the motherboard itself. To confirm the power going into the motherboard, the next logical troubleshooting step is to check the motherboard’s 24-pin power connector.
The incorrect answers:
A) Replace the power supply
It’s too early to start replacing hardware, since the problem could still be related to the motherboard itself.
B) Use a multimeter to check a Molex connector
Molex connectors are used to power peripherals in the system. Although it’s important to have proper power to our peripherals, a bad Molex connection won’t stop a computer from powering on.
C) Replace the motherboard
As with the earlier answer, it’s too early in the troubleshooting process to start swapping out hardware.
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Want to know more? Watch “Installing and Troubleshooting Computer Power.”Troubleshooting power problems with personal computers goes well beyond the power cord. In this module, we’ll show you how to use a circuit tester and multimeter to troubleshoot power on the motherboard , the PC components, and the power outlets themselves. You’ll also learn about power protection systems and the process for installing a PC power supply. |