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#1
ACHI blocking installation
I have kept my W7 ULT running 32 bit just in case I needed to run legacy programs. This has not happened so to benefit from the 8 gig of ram, I decided to change to 64 bit. Of course this means that a fresh install is mandatory. The W7 ULT came with both DVD'S so no problems there. Early in the process everything ground to a halt, "installation was cancelled ---- Windows cannot install required files --- error code 0x8007045D". I thought that the 64 bit DVD was faulty so I downloaded the ISO and that suffered the same fate. Having nothing to lose, I turned off ACHI in the bios and Windows has almost finished installing. Since the other reason for changing is to use a new SSD, I will change back to ACHI after installation. Incidentally, the optical drive is an ATA unit due to a shortage of SATA ports.