Question PC stops working when idling for around 10 minutes ?

Feb 19, 2025
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I can play games and use my newly built PC but when idling it freezes. Everything disconnects peripherals and i can't turn it off. Only thing I can do is to turn it off with the PSU switch. Pls help.
 
Through some testing I found out that if I have only 1 stick of RAM installed, the problem doesn't occur. But when I install the second stick it does.
The RAM arrived as 2 x 16GB sticks so they are the same.