Space bar not working in panel key board or external key board. is this any soft ware problem then how to correct it

SOURCE: keyboard space bar

turn your keyboard upside down and tap it a few times. if that doesnt solve the problem repeat.

If it still won't work write back for more ideas.

good luck and please rate my answer. thanks.

SOURCE: space bar is sticky du to liquid accident ( soft

If the space bar works but is sticky, try removing the spacebar and expose the hinges. Clean the liquid off with a moist cotton bud. Then fix the spacebar back in place, line the spacebar up and press gently until you hear the hinges click into place on the spacebar.
If the spacebar does not work as it should or it won't click back in place, then the only option is to replace the keyboard.
Keyboards are available on the Internet, I purchased one from Yall Store.
Use this link to their WEB site :-
http://www.yallstore.com/index.php?main_page=advanced_search_result&search_in_description=1&zenid=1lrjst3ncshlb4c7frn9bev3c3&keyword=keyboards

SOURCE: dell latitude e5500 has a

Try reseating the keyboard
http://support.dell.com/support/edocs/systems/late5400/en/sm/keyboard.htm#wp1179980
if that doesn't resolve then replace the keyboard.
the cursor jumping while typing can be resolved by enabling touchcheck in the touchpad driver settings