Homebuilt computer won't power on anymore.

drleets

Reputable
May 19, 2014
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Hi Techheads. Could use some advice. My brothers homebuild system (i5) stopped powering up one day without warning after being shut down normally. Pressing the power button results in nothing. I figure it is either a failed power supply, motherboard or case power switch.

The question is: how do I determine which component it is as simply as possible? I do have access to another power supply in my other brothers machine... I'd prefer not to have to swapped them over but suspect it is the only way (to check the PS). Easiest way of testing each component?

Thanks.