You say you have 4×8GB RAM. I had an issue where I had 2×16 GB for sometime. Later, I wanted to upgrade and got another 2x16 GB of the same RAM for a total pf 4×16 GB and my system started to randomly reboot. Taking out the two new RAM sticks stopped the random reboots.
Some RAM manufacturers recommend using RAM from the same package (i.e., for the same 4x8GB, all 4 sticks should be packaged as one).
If the above is your setup, I would start by installing the RAM that came within the same package and go from there. If you want to have 32 GB, I would recommend installing 2×16GB. Also ,keep in mind that it is highly unlikely that your CPU and/or motherboard supports quad channel RAM evening you have 4 slots for RAM.
You say you have 4×8GB RAM. I had an issue where I had 2×16 GB for sometime. Later, I wanted to upgrade and got another 2x16 GB of the same RAM for a total pf 4×16 GB and my system started to randomly reboot. Taking out the two new RAM sticks stopped the random reboots. Some RAM manufacturers recommend using RAM from the same package (i.e., for the same 4x8GB, all 4 sticks should be packaged as one). If the above is your setup, I would start by installing the RAM that came within the same package and go from there. If you want to have 32 GB, I would recommend installing 2×16GB. Also ,keep in mind that it is highly unlikely that your CPU and/or motherboard supports quad channel RAM evening you have 4 slots for RAM.