Quote: Originally Posted by stewartnbl
I am using the calculator on my computer. Using the computer numerical keyboard, I can type in the numbers so that they appear on the calculator box on the computer screen. However I cannot use the signs for addition, subtraction, etc at all on the numerical keyboard. I can access everything by using the mouse on the calculator box on the computer screen; however this is very time-consuming. What can I do to add, subtract, etc? I have been able to do the successfully in the past.
Check to make sure that your numerical keypad/block is actually set to use numbers.
This is usually the key marked <Num> or <NumLock> Some laptops require that you use a function key.
Some keyboard remapping programs can disable various keys.
You have not entered your system specs, so there is no way of knowing what machine you are using.
Also, this is a BIOS feature on many boards if you want to have the numerical keypad activated at startup.
Some registry entries were also changed in Windows 7, so various "tweaks" for previous systems will not work.
Some more information; http://en.wikipedia.org/wiki/Numeric_keypad