Question PC turns on, no beep and no display

Jun 10, 2021
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Hello,
I have a 10 years old pc.
When I turn it on, all fans and hard disk turn on, but there are no beeps and no display (no BIOS).
I removed all RAMs and turned it on, and got the beeping error thing.

I changed the PSU 2 years ago. Can it be faulty?
Thank you.