All works well except key board PS/2. Sometimes does not enter pressed key, or enters the wrong letter/symbol. For example, when I typed "7" like here and in the first line, I get whatever the last letter I typed, in these examples, a space and a "". The keypad works, and all the letters work. It is the numbers and symbols on the top row, and symbols elsewhere that do not work correctly. I have installed all updates, etc. I have tried other keyboards, both PS/2 and USB. Same problems with all. The incorrect entries do not occur in Microsoft Word, but do usually occur in special fields of sites requesting a password. I have run what I can of System Recover Repairs with no solution. What should I do next to fix this problem?

The local Geed Squad determined that it was Comcast's Constant Guard feature that was causing the prblem. It seems it is extra sensitive to character in passwords. I guess support your locals businesses is really a good idea.