My boyfriend helped me build my first pc just before Christmas. It worked perfectly for the first 2 weeks and then it started crashing (monitor would disconnect and the screen would go black) this gradually got worse over a week until it wouldn't turn on at all so i took it to a pc repair shop. I was told it was a mechanical hard drive issue??? so i removed it. This fixed the issue for a week, then it started crashing etc AGAIN! I did a lot of tests myself (passed memtest etc knew it wasn't the psu etc drivers were updated etc). so I took it back to the pc repair shop and we came to the conclusion it was the cpu or mb. So i replaced these parts and again my pc was working perfectly for a week and now its gone back to crashing on start up. After its crashed for 3-10 times and gone through that process it will work fine for as long as I leave it turned on. i am baffled and have no idea what is going on. please help, i have tried everything.
OS Version: Microsoft Windows 10 Home, 64 bit, Build 19042, Installed 20210103113259.000000+000
Processor: AMD Ryzen 5 3500X 6-Core Processor, AMD64 Family 23 Model 113 Stepping 0, CPU Count: 6
Total Physical RAM: 16 GB
Graphics Card: Radeon RX 580 Series
Hard Drives: C: 930 GB (250 GB Free);
Motherboard: Gigabyte Technology Co., Ltd. A320M-S2H-CF, ver x.x, s/n Default string
System: American Megatrends Inc., ver ALASKA - 1072009, s/n Default string
Antivirus: Windows Defender, Enabled and Updated
also psu i am using is the Evga 600W 80+
OS Version: Microsoft Windows 10 Home, 64 bit, Build 19042, Installed 20210103113259.000000+000
Processor: AMD Ryzen 5 3500X 6-Core Processor, AMD64 Family 23 Model 113 Stepping 0, CPU Count: 6
Total Physical RAM: 16 GB
Graphics Card: Radeon RX 580 Series
Hard Drives: C: 930 GB (250 GB Free);
Motherboard: Gigabyte Technology Co., Ltd. A320M-S2H-CF, ver x.x, s/n Default string
System: American Megatrends Inc., ver ALASKA - 1072009, s/n Default string
Antivirus: Windows Defender, Enabled and Updated
also psu i am using is the Evga 600W 80+