Now I have my Dell 27" all my old shots, JPGs for example, look absolutely terrible when viewed in Windows Slideshow. On Firefox they look OK. Raw files also look odd in PS now as do old PS files. Blacks are way too black, contrast is OTT and shots look desaturated and almost 256 colour GIF like. I have calibrated and used the Spyder profile....and tried the Dell profile but nothing is as it was? Help please
I am lost now.

