Chrome did use to have an issue with image resizing but this was resolved a while ago so update to the latest version if you haven't. Try left clicking on the image and opening it on a new tab, see if that works better. Alternatively, you can save the image and open it with your computer's default picture viewing tool (which should make it readable). Don't think PC specs have anything to do with it (it's a custom high spec gaming build running 64 bit win7 ultimate).
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