Long story short, I cloned an old HDD to a SSD, but the drive letter assignment got crossed with another drive. So i changed the first drive to a letter that I thought wasn't being used so I could swap the letters of the two drives. I didn't play enough attention to the warning, and the other...
P3D would be your best bet, as a lot of your FSX add-ons may work in P3D. Most aircraft will need to be repurchased, but a lot of sceneries will work as.
This reminds me of the time I sent in a 790FX board that refused to post with any quad core, but would post with a dual core just fine. Got an RMA, and clearly explained what the issue was with the RMA department, and even printed a page with the issue and placed in the box with the mobo. They...