I am having the same issue with my envy 4501(error code 0X83C0000A NOSLoaderApp). I am unable to remove ink cartridges because they remain held to the full right of the printer. i have gently tried to move the cartridges but with no luck.
I have removed and reinserted printer/drivers. error code goes away until next time I try to use it, perhaps an hour or even a day later. The machine is quite new, still on the original ink cartridges (both about half full).