Hello, I first built my computer a few month ago with only 4gb RAM. I bought the same exact RAM in another stick of 4gb (XPG Adata) and installed it. Ever since my computer takes longer to start, the screen glitches out, and my mouse doesn't work a lot. When I first stuck the new RAM into my computer it was off but it was still connected to a power cable. I turned it on and the screen wouldnt go on. The light on my mouse was blinking but the screen was black. I powered it off, unplugged the cable and tried again. The screen turned on but everything was weird and wasn't working right 100% of the time like it did before. Please help!