PC won’t boot after ARGB issue
Hey Guys, I need some help with a very specific situation.
First of all my PC:
RTX 2070
Ryzen 7 2700x
Gigabyte X470 Aorus Ultra gaming
Wraith Prism CPU Cooler
16gb DDR4 3000mhz G.Skill Dual Channel RAM
be quiet l8 500w PSU
SATA SSD
Panorama Case with 7 PWM ARGB Fans (3 in Daisy Chain and another 4 in Daisy Chain, so separate chains)
I initially tested only a single daisy chain with 3 fans. Since the fans use standard 3-pin ARGB with a missing middle pin, and my motherboard only has VDG, I used an adapter that converts ARGB to VDG. I connected everything and plugged the VDG into D_LED2.
I recently bought my motherboard used. An important detail: the jumpers on both DLED_V_SW1 and SW2 were missing. At that time I didn’t know this, because I wasn’t aware that such jumpers exist or that they are important.
I then powered the PC on for the first time with only the 3 fans connected. It booted normally into the BIOS. However, the fans did not light up at all. Looking back, I now know this was due to the missing jumper, but at the time I obviously didn’t know that, so I shut the PC down.
I then looked at my motherboard and noticed that directly below the DLED_2 header there is an almost identical header, also with 3 pins. I thought I had made a mistake and that this was actually the correct header. So I connected my VDG cable without any issue, since the missing jumper did not physically block it.
As it turned out later, this was the DLED_V_SW2 header.
I then powered the PC on. My power supply immediately went into hiccup mode (as the AI called it). It started clicking repeatedly, sounding a bit like a machine gun (for those who know it, similar to a BTR-80A cannon sound).
As far as I remember, the three case fans did not flash or spin at all. My CPU cooler fan’s RGB flickered, and the fan itself spun unusually slowly. I shut the PC down after about 3–5 seconds using the PSU switch.
There was a burnt smell, but no smoke or visible damage. From my nose, I could trace the smell directly to the DLED_SW2 header.
After about 2 hours of leaving the PC completely powered off, I disconnected the VDG cable (the PC was of course not powered on at any point during this). This confirmed that the smell came from the header and the cable connection.
Visually, both the 3-pin header and the VDG connector still look mostly fine. The only visible damage is a small spot further up the cable (about 5 cm away from the connector), where the thin outer layer is slightly damaged and some silver-looking material (similar to aluminum foil) is visible, but it is a very small area.
After leaving the PC completely unplugged for 2 days, I tried to start it again (with all ARGB components disconnected). I plugged in the power cable and switched the PSU from (0) to (I). Immediately there was a change: normally the motherboard lights up either briefly orange or stays orange (RGB logo/lighting). This time it flashed white briefly and turned off immediately.
My mouse also lit up for about 0.5 seconds after the motherboards flash and then turned off again (note: I had not pressed the PC power button yet, only switched the PSU on).
I then pressed the power button, but absolutely nothing happened, as if the PC had no power at all.
I removed the CMOS battery, left it out for 10 minutes, and reinstalled it.
Now, when I switch the PSU to (I), the same behavior still happens. However, when I press the case power button, the CPU LED flashes red briefly and nothing else happens. If I press it again, nothing happens at all. I have to switch the PSU back to (0) and then to (I) again in order to get the same brief CPU LED flash when pressing the power button.
I honestly don’t know what to do now. Can someone please help me? Thank you very much. If anyone needs more information or has questions, I’m always available. Btw AI said everything should be fine, except for the DLED_SW2 header and DLED_2 header. If needed I may can provide some pictures, but my camera isn't that good.