[SOLVED] New System Not Booting

Feb 3, 2020
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I tried installing the following components but the system doesn't seem to work. I'm brand new to PCs so let me know if there is a big no-no.

Dell 7010 mobo
i5 processor
DDR3 RAM
Seagate HDD
ADATA SSD
GeForce GTX 1660

Let me know if there is anything I'm missing