this post was submitted on 12 Aug 2026
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Give us a close up of your motherboard here.
Also, try booting without the optical drive plugged into anything. It's useless anyway and it might be just enough of a difference in power to get you booted reliably. If that does work though, I wouldn't be surprised if you see crashes when you throw a graphics workload at your card and it tries to draw its full power.
unplug the optical drive makes it boot properly it seems to be a psu problem will upgrading to 500W work? or I need 600W?
500W is plenty, just make sure it's from a reputable brand instead of the no-name that came with the case.
what if i want to uograde the i3 8100 to a 9th gen i5 or i7? does that change the PSU a lot?
I would expect a (legitimate) 500W psu to still be enough, going from i3-8100 to i7-9700k is only going from 65W TDP to 95W TDP. I would recommend a better cooler than the stock intel one if you go for that, though.
Do you still use the optical drive? If not just leave that unplugged
The GPU (and CPU, for that matter) at full load will draw more than it does at boot. Just because disconnecting the optical drive bought enough headroom to successfully boot does not necessarily mean that the computer will be stable under load.