If its always the same letter then it might have dirty contact.
In that case you can pop the cap off the key and check to see
if the contact is clean. Otherwise get another keyboard to see
if you have problems with that one. If the 2nd keyboard works
ok - then get a new keyboard - they are less than $10....
hi my dell inspron 600m keyboard few keys are not working inculding enter key.what was the root...
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hi my dell inspron 600m keyboard few keys are not working inculding enter key.what was the root cause