Hi , I'm using a laptop (Lenovo Ideapad y470) with Windows 7 Home Premium 32-bit. I'm not sure how I came about this problem but here it is : Whenever I press the keys "x" or "c" on the physical keyboard , the "shift" key will act as if it's jammed . I.E pressing the letters will produce capital letters with the exception of "x" and "c" while pressing the numbers will produce the symbols instead. I've found a way to undo this effecT by pressing "shift" several times on the On-screen keyboard , but it will return every time I press the keys mentioned. I had turned off Sticky keys and filter keys but it doesn't make any difference. [This was typed with the onscreen keyboard.] Any help would be greatly appreciated.