The system shuts down unexpectedly regardless of actions taken.
The system shuts down unexpectedly regardless of actions taken.
I've worked on and assembled computers throughout my adult years. I just transferred my machine into a brand new enclosure and it keeps restarting unpredictably every few minutes to hours. I've tested everything: changed the power supply, CPU, motherboard, GPU, RAM, and even flipped the power switch manually to rule out faults. I updated the BIOS too. I experimented with voltage and clock speeds but the problem persists. It seems to disappear when the system is under stress. If anyone knows anything, it would be greatly appreciated. I've invested most of my time—about four days—trying fixes and feel like giving up. My Ryzen 7 5700X (replaced the older 7 3700X since I thought the CPU was the issue) is paired with an MSI B550 Bazooka. The graphics card is an EVGA RTX 2060 Super with 8GB x2 at 3200mhz. I also used a 600W power supply, but swapping it to a 550W bronze unit didn’t help.
Have you tested using another power source? It might be due to poor quality electricity causing unexpected restarts. Didn’t you consider updating the operating system or using a new SSD/HDD?
Crashing in BIOS usually indicates either a problem with the power supply or an issue with how the board is connected. The second point suggests checking the mainboard's connection to the case for any shorts. Remove the system from the case onto a soft surface and retry. Be aware that the board might already be damaged, so inspect it carefully for signs of damage on the underside.
I recently installed a brand new motherboard, which increases the likelihood of encountering a faulty BIOS. The odds of both my board and the BIOS being defective are extremely low. I've also tested another power supply, but it didn't make any difference. My current board has been in and out three times. I've double-checked all standoffs and inspected the board for any damage before the last time I installed it, and I didn't notice anything visible. Now I'm really unsure what's going on and it's affecting my confidence.
It might occur when the board attempts to read data via a bus from a nonworking device, causing the BIOS to lack error handling and freeze if a device stops responding. For instance, a BIOS trying to retrieve information about a drive or network that is offline or damaged. This scenario can arise with outdated IDE controllers after a drive failure, but it’s possible with any controller if the firmware isn’t sufficiently advanced.
It's a 500GB 970 Evo Plus model, and I've owned it for about a year now. I'm also checking its performance on another power source to ensure there are no issues with unstable electricity.