I recently purchased a Dell XPS 8700 with an Intel Quad-Core i7-4790 Processor 3.6GHz, 16GB DDR3-1600 SDRAM, 2TB 7,200RPM Hard Drive, etc. I have installed an Intel Series 750 400 GB Solid State Drive in the PCIe slot. When I log onto the BIOS the SSD drive is not shown. Dell BIOS version is A11 build July 2015. SATA mode is set to AHCI and Boot Mode is set to Legacy.
I have called Dell Technical Support and am assured that the motherboard will allow me to create a bootable Solid State Drive.
After calling Dell Technical Support several times and each time after spending between 10 and 30 minutes on the phone I have been disconnected. Once it was my fault. The other times communication to the Philippines was lost or whatever. The last time I spent over 30 minutes to be connected to the Dell Advanced Technical Support - Hardware section only to be told that it was a great deal of static on the line and then the connection was lost.