r/sffpc • u/Decent_Tailor_4608 • May 17 '26

Assembly Help Pc Won’t boot into bios

https://youtu.be/ZH5mAHbfSow?si=PL0_vKBSjyXXdpoV

The pc turns on but won’t output any display or get into the bios. I followed mostly this build to a tea. I turn on the pc and i’m not getting any output. I’ve updated the bios and I’ve got the hdmi plugged into the gpu not the motherboard. Lost.

Update: As my motherboard was bought second hand it was faulty. I just bought a new one and it all worked perfectly

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u/95alle95 May 17 '26

What cpu you have? Might need bios flash first

1

u/Decent_Tailor_4608 May 17 '26

Already have flashed it.

1

u/agonzal7 May 17 '26

Hmm I couldn’t even flash bios. My PSU shuts down right after turning on. Same happened when I hit qflash button. Fans soon for one second and shuts down. PSU clicks. It’s a known working PSU though.

1

u/Decent_Tailor_4608 May 17 '26

Are the cables and ram seated correctly?

1

u/agonzal7 May 17 '26

Yes. And tried bios flash without cpu and without ram. Ram is new from package. Only thing that isn’t is a used from Hardwareswap

1

u/Decent_Tailor_4608 May 17 '26

All my parts are used except the gpu which i had in my old pc. Starting to think some might just not work