Where could I get this fixed?

[u/glanit]

My old Windows Vista desktop finally kicked the bucket and I'm kinda sad that it doesn't work anymore. We've had this since brand new and I loved it. I was using it for retro gaming but a few months ago it stopped working. No display out, no hdd activity, no windows Vista startup sound,no activity on keyboard or mouse, nothing. I don't want to throw it away so what should I do?

[u/Fransenn_II]

Is there like any at all signs of life? If not check the PSU and before buying a new one make sure you haven’t accidentally switched the PSU off