RageTester

Try with TV as monitor just in case. I can't explain it, but my new PC doesn't work with my old reliable monitor either.

It's been done, but final looks depend on your skill. Gluing it together might be easier, but it will probably look better when using more advanced technique. Wood can crack and change shape as it dries, so make sure wood you use is completely dry already. Other than that it's even safer than having metal case, because dry wood doesn't conduct electricity, even if some exposed parts touch the case it shouldn't short anything out... Probably the one to look at: Too advanced:

Do you have any OS installed on current drive? If there is no OS, then graphics driver is for sure missing too.

My PC works with TV as monitor, not sure about current case. You should check RAM sticks and if power cables are plugged in properly. 24-pin mainly.

I recently had same problem I think. Try with TV or different monitor. It turns out my PC was booting, just not sending signal to the monitor.

Hibernation still uses some power, but PSU fan probably stays idle at the time. I suggest turning PC off completely, giving all parts a proper rest. Again that doesn't sound like a terrible catastrophic noise.

Might not be the solution, but funny video:

That is not the noise level I was getting, all other sounds in video are louder compared to it. If it turns back on I don't see much of a problem, just close the case and put computer further away from your ears.

I had trouble with power supply fan getting loud on one work PC. Problem is regular shops only sell power supplies as a unit, not spare fans. You could try blowing the dust away, add oil to fan hub if you know how, but if PSU is old, best idea is getting a new one.

Thanks for trying... Computer worked with TV... probably refresh rate issue, something not supported by my old monitor....

Cables are not that expensive, not worth the repair in my opinion. You can also get one in color you like.

I have no GPU, only iGPU. Only 1 HDMI port, will go buy displayport cable after work... Maybe I am stupid and red LED for 1 second counts as error. I am attaching a video of what happens right after I use power button. a2a29dce-a83b-4587-abaa-8fb5515bf736(1).mp4

Just in case it's drivers... I found SATA power and data, connected SSD that for sure had linux on it, still nothing. Next bios, and then CPU that I really didn't want to touch.

You can adjust/limit RPM, not just the temperature fans kick in. But I am surprised you complain about fans at 30%... I have mine at 70% all the time, except not limiting GPU at all. It's the ramp up that annoys me, constant speed I get used to.

Not all, I never touched a radiator in my life... But I am sure fast food contains things way worse, people know it, but still consume. Even the good things we try to do can cause harm. Just saw news of kids getting intoxicated by vitamin D supplement Nateo D Forte