I have a Gateway E4100 desktop. It has a Pentium 4 2.8ghz (single core I assume). CPU appears to be not supported. I had a 250gb hard drive disk and 2gb of ram laying around, so I wiped and installed them. 2gb is only temporary. And integrated graphics. I found out 2 optical drives wouldn't boot, so I tried a 3rd and Win7 trial installed. The problem is that 8.1 and 10 have this NX requirement. What would be the safest route to install Windows 10? Thanks.