Alienware M17x R4
So when windows 10 popped and said it was ready for install I went ahead (it had previously said not ready, so when it said ready i assumed all would be ok -doh!)
upgraded and worked fine for a little while then problems with the display, managed to use the recovery image to get back to as shipped state, upgraded again from essentially clean, system, same issue worked for a while then got display issue, used windows 10 recovery,didn't work, then used windows 10 reset, all that seemed to do was remove useful things like alien respawn.
So tried to go back to factory image (F8 on start up) but this time when i selected factory image reset it couldn't see any disks or images, managed to get them appear by changing disk type in bios, unfortunately after i re-installed windows from CD on reboot it came up with "disk read error - ctrl alt del to restart", removed the hd and put it an external case and using another laptop it found errors on the oS partition which it repaired and I can read all the files when it's in the external case, put it back in the laptop and get the same read error.
Run the diagnostics from F12 and no errors reported, so i'm now stuck,any suggestions or do i need to send the disk/laptop back??