I would not jump to that conclusion. Many old PCs had the BAD CAP plague so as they get older that is one of their symptoms but without PC details I would be guessing badly. Here's a link about how to look for the BAD CAP issue:
https://www.badcaps.net/index.php
Hi, i have an old pc. Today when i try to boot it nothing happens theres only a faint green blinking near the power button, is my psu is broken?

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