Thank you both for your replies, and the welcome to the forum. I have found the OEM disk that came with the PC and have decided to start from Scratch. Ive not done anything to this PC before and my previous PC had a single hard disk so not really used to RAID etc. The SSD is 120MB and my system disk had less 80MB on it after I partitioned it. I did use the clone function in Acronis but obviously messed it up. Luckily I had the sense to back up my data.
The SSD was booting up fine, and my keyboard, mouse, printer and network adapter were all working fine. Only mass storage wasnt being recognised.
However, I realise I have made a pigs ear of it, so have reformatted the SSD and will start from scratch. My 3 external hardisks are all pretty full as I use them to back up 15 years of photographs multiple times and use them for media on 2 Tv's.
Really appreciate you taking the time to reply, and may be back tomorrow if I mess up again. Mechanical engineer not IT