it sounds like you might have display scaling enabled. if oyu go to "Control Panel\All Control Panel Items\Display" within your control panel, it will tell you what your current scaling setting is. if its anything other than "100%" then applications that are not High DPI aware will be blurry as windows is up scaling them.
edit...
if it's set to something higher, setting it back to 100% will make everything smaller on screen. your laptops screen is around 141ppi/dpi which is to small for a lot of people to use at 100%.