A personal computer that resides in one location with its core components inside a case separate to third-party peripherals required for operation, such as a mouse, keyboard, and monitor.

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What do the blinking lights inside the case mean?

While using my computer I notice that there seem to be lots of random blue and yellow lights inside the case of the computer. Could these mean there is a problem?

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For blue, likely no. Regardless though, it depends where the light is coming from. If you have no problems, then it is likely that they are just status indicators or for aesthetics. One exception would be the motherboard's LED error indicator. If you do have issues, the first place to look would be here. It settles on a code after booting up (or failure to boot up). After determining the code, you would then be able to check either online or within the manual (for the specific motherboard) to determine what the code is telling you.

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