The system shuts down and then resumes operation independently.
The system shuts down and then resumes operation independently.
I recently built my first PC and am facing problems right after logging in on Windows. About half the time, the display starts to malfunction, showing glitches and lagging, especially when videos begin. Booting this way causes videos to stutter heavily. The fans often speed up, and sometimes the screen freezes completely, with monitors blinking before the system restarts. After a reboot, it usually works fine, but other times it reboots again with issues. On some occasions, the whole machine shuts down entirely until I power it off manually.
I’m unsure what’s causing this or how to diagnose it. I’ve tried restarting frequently, but it doesn’t always solve the problem. I first built this PC in July using Linus’ guide and everything worked perfectly. Then installing signalrgb caused all colors to misalign, making the display out of sync. Even after removing it, the color problems persisted, so I decided to wipe the drive and reinstall Windows.
This machine isn’t my primary one yet, so I hadn’t had any trouble reinstalling before. However, after a fresh setup, similar glitches appear. Initially, all fans would turn on when I pressed power, but now they only activate after logging in. The issue started roughly a month and a half ago, coinciding with the fresh installation or a Windows update.
Details: CPU – AMD Ryzen 7 9800X3D; Cooler – Corsair iCUE LINK TITAN 360 RX LCD; Motherboard – MSI MAG X870 TOMAHAWK WIFI BIOS; RAM – G.Skill Trident Z5 Neo RGB 64GB (2×32GB) DDR5-6000 CL30; SSD – Samsung 990 Pro 2TB NVMe PCIe 4.0; GPU – Gigabyte WINDFORCE OC SFF GeForce RTX 5080; Case fans – all included; Power supply – MSI A1000G; OS – Windows 11 Pro (Retail, version 25H2). Additional fans: Gigabyte AORUS 120mm ARGB, Gigabyte AORUS 140mm ARGB.
I don’t know much about MSI motherboards but since you’re having boot problems (RGB not working as before), it might be a BIOS issue. Start by resetting the CMOS memory—it’s simple and should fix incorrect BIOS settings. This will also reset things like Expo or XMP, so you can adjust them later if needed. If your PC doesn’t return to normal behavior, try setting RGB parameters in the BIOS yourself. On my ASUS board, I can save certain patterns that take effect immediately after boot. After entering BIOS, the software will manage the RGB settings. If the issue persists and your computer keeps crashing or rebooting, consider re-flashing the BIOS. This can resolve corruption (though it’s uncommon). You’ll likely need to follow the steps in your motherboard manual. There’s also a possibility the glitches stem from faulty video drivers—use DDU to remove current drivers or check Gigabyte’s website for card-specific ones. If that doesn’t help, try booting without the graphics card; your CPU’s built-in GPU usually handles everything fine for apps and basic games. If it still fails, the problem might be with the GPU or Nvidia drivers. On the positive side, your hardware is still under manufacturer warranty. If you hit a dead end, reach out to MSI or Gigabyte for a return merchandise authorization. Good luck!