Black Screen, Power Supply and CPU fan working

Ninjin · Jun 24, 2016

Hey <3,
when I start my computer the screen doesn't turn on, it stays on orange. The Power Supply fan and the CPU fan are rotating and I get the normal sounds except the fans of my graphics card, they are trying to move every 3 sec, but they don't. I removed everything except the Power Supply and the CPU + fan and get a sound 3-4 per second which - told me on another website - that this is the normal behavior. Obviously the screen is completely black and the monitor shows orange. When I plug-in the RAM now, the screen stays black, orange monitor, no message, nothing. Bought new RAM, still the same. Tested monitor with my Playstation 3, it's working, turning green. Also removed the BIOS battery for a day, still the same. Keyboard is not light up. Any chance I'm missing something? <3

Faux_Grey · Jun 24, 2016

Please check if your graphics card requires any external power connectors (6 pin, 8 pin)
If so, please plug them in.

Ninjin · Jun 24, 2016

It worked before, I tripple checked, every cable is in it's place. But let's go back a step, it should get into the BIOS when everything is unplugged except CPU, Mainboard, PowerSupply, Am I right? <3

Faux_Grey · Jun 24, 2016

Don't forget RAM.

You need ram to get to POST to get to the BIOS.
If you've removed the GPU and reset the CMOS/BIOS by removing the battery but still get no display, then something other than the GPU is the problem.

Ninjin · Jun 24, 2016

I tried it with RAM and without. Without RAM, I get 3-4 sounds per second. Another website said the 3 components should be fine if that happens, but with RAM I can't get into the BIOS even by trying out with another RAM. Personally, I think 1 of the 3 components, PowerSupply, Mainboard or CPU must be the problem then.

Faux_Grey · Jun 24, 2016

You could always try boot with only 1 stick of RAM, in case it's the RAM itself that's causing the issue.

Ninjin · Jun 24, 2016

Sry, forgot to add that one. I tried sticking 1 RAM and even in the 2 different slots. Still the same <3

Faux_Grey · Jun 24, 2016

This may seem stupid, but does the screen have multiple inputs?
Does it work with the same cable/screen on a different computer?

Ninjin · Jun 24, 2016

I got 2 monitors, 2 cables. 1 DVI and 1 HDMI. They were both attached to the graphics card before. By removing both cables, I tried to plug in each of them into the Mainboard, single, both. Still the same <3

Faux_Grey · Jun 24, 2016

Could you test the monitor with another PC?

It's a bit weird that both cables were plugged in at the same time.

Ninjin · Jun 24, 2016

The HDMI should work alone, tested the monitor on my PS3 and it worked.

Ninjin · Jun 24, 2016

Wait, I tried putting in the RAM I got today in only 1 slot. It seems to work, will test the second slot and report back <3

Faux_Grey · Jun 24, 2016

Ninjin :

That sounds promising.

Ninjin · Jun 24, 2016

Sometimes I don't understand computers... I plugged in the RAM in the first slot, I could reset the BIOS settings with 1. Now I tried to plug in the 2nd one and it worked. I have no idea why. Tried to plug in the old RAM, also works. I don't know if Windows messed up with the BIOS settings somehow. Maybe by unplugging other cables I did something, seriously, my brain can't understand why it's working now, but thanks to give me the hint to try to plug in 1 RAM, I tried it with the old one, maybe before I reset the BIOS. Now it's working, thanks for saving my cave life! <3

Faux_Grey · Jun 24, 2016

No problem.
I've seen a lot of weird things like that with RAM.

Ninjin · Jun 24, 2016

Tried again, not working with 2 RAM's. Tried 10 time with 2 again, not working. Tried 1 time with the first slot and it's working again. And I'm back <3

Faux_Grey · Jun 24, 2016

So both sticks work in the first slot seperately, but as soon as you use the second slot stuff stops working?

Ninjin · Jun 24, 2016

Both seem to work on 1 slot, but when I add the 2nd one something is wrong. The sounds, the fans, everything looks the same, except the graphics card fans are not moving and I get a black screen, keyboard and mouse not light up. 1 time it even started with both slots filled. It seems if I try enough times, I can load the OS/BIOS into 2 attached RAM's, but the chances are pretty low. Maybe the Motherboard has a malfunction or something, sadly I don't have another here and can test it <3

Faux_Grey · Jun 24, 2016

Sounds like there's something up with slot 2.

Maybe get an artist paintbrush and gently try to clean out the second slot. Worth a shot.

Ninjin · Jun 24, 2016

It gets weirder. The computer is not even 2 years old, thus I couldn't even see 1 single dust particle. Now more testing reveals, sometimes even putting 1 RAM into 1 slot is not working. It seems the chances of getting a non-blackscreen and a lit mouse/keyboard is higher when unplug and plug in the RAM like an old Nintendo or Sega. The computer also started with 2 RAM's with the same method more easily. After the boot, everything seems fine and is working (no sudden blackscreen or something)

Ninjin · Jun 25, 2016

I could reduce the issue. It's not the RAM, it's probably the power supply not giving enough power, a broken motherboard or maybe the power button is broken. <3

Black Screen, Power Supply and CPU fan working

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