I had the same trouble when I tried to install win 7 Embedded into t510. I could not install Win 7 Embedded though, Win XP SP3(2009) was installed by using t5630w. It's very simple, download XP 2009 from HP t5630w site and deploy USB.(minimum 2GB), then set it t5630w as usual installing. At the end of this process press "S" to shut down. Relese USB memory to to replace Apacer 2GB of t510 and start to setup.