I have a Toshiba Satellite A55-S6925 laptop. Several months ago I replaced the display monitor with another of the same manufacturer (Samsung), as the original monitor suddenly developed an internal crack (no trauma!). The new monitor works, but my entire desktop is shifted 2 cm to the left and a couple mm down. So, part of my desktop I cannot access. I have tried several display settings and updated the monitor driver, both to no avail. Anyone have any thoughts? Thanks!