The PC shuts down periodically and remains trapped in a restart cycle afterward
The PC shuts down periodically and remains trapped in a restart cycle afterward
My setup details: a 300 Watt power supply, Intel Core i7 4790 processor, Nvidia 1050Ti graphics, 8GB RAM, Acer Noname motherboard (BIOS P11.B4), Windows 10 Home version 19044.1586 (64-bit). My issue is that the machine often stops working after a short usage period and then restarts automatically. I’ve removed the graphics card for testing, added a case fan, replaced the cooler with an old Pure Rock 2 unit and some thermal paste, and even swapped the PSU to a new Marblebron 750 Watt. Despite these changes, the system still crashes after about 20 minutes of CPU stress testing, reaching temperatures around 75°C. I ran Memtest86 for two hours and changed the GPU, but no improvement was seen. HWmonitor shows TMPIN6 readings between 120-122°C during startup, which feels unusual. Also, running Prime95 with small FFTs causes immediate restarts. It seems like faulty sensors might be sending incorrect temperatures, triggering the shutdown.
TMPIN6 might be a sensor that HWmonitor displays as a random temperature reading. If the temperature remains steady, that makes sense. You also mentioned having an i7 4790 with an Nvidia 1050Ti and a PSU recommendation of at least 400W from whatpsu.com. Could this affect performance? If not related to the power supply, I don’t know the exact reason for the restarts.
Thank you for your prompt reply. You mentioned the 122°C value seems like a placeholder, yet it's actually varying between 119°C and 120°C with a peak at 122°C. The 400W minimum is notable, but I already changed the PSU to a 750W unit, so that shouldn't cause any issues.
TMPIN represents the VRM temperature and might be the cause of the PC shutting down. A temperature around 100°C is typical for a low-cost board without VRM cooling, while 120°C is higher than expected.
I attempted to lower the VRM temperature using a dedicated fan and adjusted the motherboard placement for better access. After three minutes of cooling, no improvement was observed. To test the fan's effectiveness, I directed it toward the power supply unit, achieving a quick 3-4°C reduction in just ten seconds. I also checked nearby components and found them warm but safe. The temperature reading of 122°C seems too high. Would you consider disabling the BIOS feature that triggers restarts to see if the system remains stable? Additionally, are there other factors I should investigate?