RTX 3080 performance lasts 30 seconds before shutdown
RTX 3080 performance lasts 30 seconds before shutdown
I built my first custom watercooled setup recently, featuring an i5-12400 and an MSI Ventus RTX 3080. Before final assembly, I tested it thoroughly, and everything functioned correctly. The build took roughly a month to six weeks due to shipping delays on some Corsair parts. Once everything was ready, I powered it up and it started and idled properly without any issues. However, it only displayed for about 30 to 45 seconds before going black. After a few restarts, the problem disappeared, and the system stayed on normally afterward. A restart and changing the HDMI cable to the motherboard port resolved the issue completely—no black screen ever. I installed all drivers and firmware, including a BIOS update, but nothing seemed to fix it. My PSU is 850 watts, which rules out power supply problems, though I haven’t tested another unit. There were no visible faults or loose connections. The card still works and the GeForce experience remains functional, so it’s unlikely the GPU is dead. It also shows correctly until it shuts down. The cooling loop appears intact for the first 48 hours. Full specs: i5-12400, 16 GB DDR4 3200, Kingston Fury Beast, 10GB TeamGroup M.2 SSD, Corsair RM850, custom loop parts with iCUE controller, and an airflow case. The system runs extremely fast, and I’m eager to get it running properly. Any suggestions?
Attempted but no resolution found. It might still relate to the power source. I’m hesitant to assume the card is damaged because it works until it shuts down.
They're actually quite sensitive with those GPUs, that's for sure. I recall many folks ran into problems with rm psus, but not with rmx... although rm isn't a bad PSU, it might be worth a shot. Rmx seems to cope better with brief power spikes. P.S.: Also, since you mentioned the alert, go ahead and run rmi... it's cool to watch your PC's power usage in real time! Edit: see the post below.
It shuts down when idle, not loading much before stopping. It doesn’t appear to trigger at any particular boot stage, just crashes quickly. If the machine hasn’t been turned on for a while, it stays on longer before freezing, then shortens with each reset and restart attempt.
It seems to launch quickly—maybe at a system boot or during startup. Look for the Windows logo appearing on the screen, or hear the boot sounds matching typical Windows behavior. If it doesn’t show up clearly, check your power supply and ensure the PC is properly connected. You might also try resetting the CMOS or updating BIOS settings to see if that resolves the issue.
It will start up correctly on both systems, but the display loses connection after a certain period. Using the motherboard video output and built-in graphics works fine. I've configured Windows fully, and the system runs smoothly thanks to the M.2 drive and CPU. The main problem is with the graphics card—despite staying on, the signal disappears without any crash. GeForce Experience still recognizes the card, and drivers are functioning properly, suggesting it's not dead. It just appears as if the video signal cuts out.