Question I replaced my ram and now my usb and graphics card display ports aren’t working

Jul 9, 2020
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I put in 2x8gb corsair vengeance sticks and now my monitor, mouse, and keyboard aren’t connected it still turns on, all the fans come on and such, i just can’t get anything to connect, i put my old ram back in and still no luck. Im really not trying to buy a new motherboard also, any suggestions?