I just bought a new samsung and first thing I did was uninstall norton antivirus. Then it asked me to restart my computer. When it turned back on it just has a blank black screen (with backlight on) and a flashing typing cursor in the top left corner. I cannot type anything into it, and pushing F2 or F4 does not do anything.
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Yes i would RMA the item.
or atlest call their tech support as the system is still new.