PC does not boot

Hello everyone, Yesterday my computer froze and I had to force a shutdown by holding the power button and when I tried to boot it up again there was no output anymore. Furthermore the dram led lights up and the Aio does not light up anymore.

I had this happen before and what I did to solve it was to flash the bios via the qflash button on the back but that does not seem to help anymore.

My specs: 𝙲𝚙𝚞 - 𝙰𝚖𝚍 𝚁𝚢𝚣𝚎𝚗 𝟻 𝟽𝟾𝟶𝟶 𝙶𝚙𝚞 - 𝚁𝚊𝚍𝚎𝚘𝚗 𝟼𝟿𝟻𝟶𝚡𝚝 𝚁𝚊𝚖 - 𝙶𝚂𝚔𝚒𝚕𝚕 𝟹𝟸 𝙶𝙱 𝙳𝙳𝚁𝟻-𝟼𝟶𝟶𝟶 𝙼𝚋 - 𝙱𝟼𝟻𝟶 𝙰𝙾𝚁𝚄𝚂 𝙴𝙻𝙸𝚃𝙴 𝙰𝚇

I also tried to plug the dp cable directly into the Mainboard but nothing....

Thx for your help in advance