This is a new computer (3wks old) Acer Aspire X1700,currently running Windows Vista. 3 days ago we noticed a bright blue speckly haze creeping into all of the blalck that was on our screen,whatever site we visited and also on the desktop. It now dominates everything black and the other colours especially noticeable on red,have gone very dull. Someone suggested the graphics card? Any help would be much appreciated!! It is not getting any worse but is there constantly and is very annoying. I was wondering if it was something fixable from home rather than unplugging everything and lugging it back to the shop

Thanks!!