Try testing the CPU with Prime95 with the Small FFTs option for a hour.
Try testing the RAM with Memtest86 for 3 hours.
Try testing the GPU with GPUPI 3.3.3,Press Calculate then use the following settings:
Try testing the GPU with MSI Kombustor for a hour.
Tell us if you get any errors while testing.
Prime95 download page:
https://www.mersenne.org/download/
Memtest86 download page:
https://www.memtest86.com/download.htm
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