[SOLVED] Win7 64bit Reinstall on SSD - no driver?!?

Similar problem as "Conal" .. Have been having small problems so have opted for a new reinstall Win7 64bit.. so the problems begin!! put disk in gets to Install..then the a screen says it does not have a driver for my disk drive please locate one on my sys or on a USB??...only thing that has changed since the original install is that I changed the HD in the BIOS to AHCI (for TRIM on a SSD)..Tried Vista 64 bit and it has no problem loading!!...I suppose I could set the BIOS back to IDE, install then back to AHCI..Sys is the same including SSD 240g HD

Was my computer and I still do no know why!!!!
Installed on another copmputer..made Acronis backup......and used this to install on my computer...everything working fine including going to sleep....