Pc peripherals won't work after moving RAM?

[cosmicbatz]

My pc was having some issues so I tried checking to see if it was a bad ram slot. I have 2x 4gb ram sticks muskin blackline.
Anyway, I took out one stick and I still had the glitch I was experiencing(nothing major just some screen tearing in games) so I moved the second one to another slot. I turned on my PC, but none of my peripherals worked. My monitor was on but wouldn't display anything and my mouse and keyboard wouldn't turn on. So I added the other ram sticks and put them back exactly where they were, but still no luck. What do I do? I can't access BIOS or anything because none of the peripherals work.

 

[Tradesman1]

Unplug, open the case, remove the DRAM, reset the CMOS then install the DRAM in the proper slots and ensure it's fully seated then try starting up - will need to reset the date and time