I have the Sony VAIO Desktop PCV-RZ30CG .The client had XP SP2 automatically install on the pc. After it would not boot. I tried recovery fro the hidden partition but it would not work.I ordered new disks from Sony and they would not work, ordered another set would not work. Said disc not compatible with machine check model. Did that am sure these are the disks. Sony support said to flash the BIOS and it had to be done in Windows. I formated the drive installed XP home and flashed. Still can’t use the disks. Drained Bios, swapped memory, still no go.