The GPU causes the PC to power off despite being unplugged from the power supply unit.
The GPU causes the PC to power off despite being unplugged from the power supply unit.
You can't run your graphics card without the proper PCIe 8-pin power connection, which means it won't work when the system isn't fully powered on. Using a 2-molex to 8-pin PCIe adapter is likely not ideal; consider upgrading your power supply instead. Avoid connecting the GPU to two separate molex adapters.
Hey there, just a quick note before things get intense. Could you share your complete specifications? We’re concerned you might have a very high-power GPU. If you use an adapter, we’re worried it could overload your power supply and harm your entire system. Back in the day, GPUs didn’t draw much power, so adapters were an option. For your case, your GPU does pull power from the PSU through your motherboard—just remember the PCIe slot handles both data and power.
CPU is an Intel i5 3470 running on a standard cooler motherboard. The graphics card is n580gtx twin frozr II/OC. It has two 4GB DDR3 RAM sticks. Storage includes a Crucial bx500 240GB SSD and a random 160GB HDD.
Seriously, avoid using MOLEX in PCI adapters. I nearly destroyed my house with one adapter feeding my GPU after just a few days of PSU changes. Luckily, I noticed the burnt plastic smell early. Don't try this. Get a proper PSU. As others warned, your GPU crashes happen because of insufficient power. Don’t force it that way—otherwise you risk damaging the PSU or overloading the rails. Imagine if 12V entered your 3.3 or 5V lines—it would ruin everything.
Be careful with power and voltages, buddy—getting into gaming isn't worth risking a fire. Stay safe, gamer.