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laptop keyboard not working unless On-Screen Keyboard is Opened
I am Using Dell Inspiron 1545N laptop having Windows 7 Ultimate 32 Bit OS, since a couple of days i am having a strange problem with my laptop keyboard , it is not working at startup but once fully logged in i have to open on screen keyboard to make it work. earlier i assumed it as a hardware problem, since it works after opening onscreen keyboard it might be software issue. because of this i am unable to press F8, F12 and F2 at startup, and even i disabled password login as i am unable to enter password at login screen. can anybody please help.