What is the make and model number of the motherboard?
What is the make and model number of the PSU?
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If it is an [https://www.google.com/search?client=firefox-b-d&q=atx+psu|ATX type PSU] (examples only), try the [https://www.silverstonetek.com/upload/downloads/QA/PSU/PSU-Paper%20Clip-EN.pdf|paperclip test] to make sure that uit is OK.
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If it is an [link|https://www.google.com/search?client=firefox-b-d&q=atx+psu|ATX type PSU] (examples only), try the [link|https://www.silverstonetek.com/upload/downloads/QA/PSU/PSU-Paper%20Clip-EN.pdf|paperclip test] to make sure that it is OK.
If the PSU is OK have you checked if the power button is OK electrically?
Hi @hamidrdadkhah
What is the make and model number of the motherboard?
What is the make and model number of the PSU?
If it is an [https://www.google.com/search?client=firefox-b-d&q=atx+psu|ATX type PSU] (examples only), try the [https://www.silverstonetek.com/upload/downloads/QA/PSU/PSU-Paper%20Clip-EN.pdf|paperclip test] to make sure that uit is OK.
If the PSU is OK have you checked if the power button is OK electrically?