Hi Solomon,
If you're having trouble with your keyboard, it could be for a number of reasons. If a few keys aren't working, you may have debris under the keys. If the entire keyboard is not working, maybe it has sustained liquid damage and needs to be replaced.
Here's a link to the [[Compaq Presario V2414NR Troubleshooting#Section_Keyboard_Unresponsive|Troubleshooting Guide]] for the computer. It will help you determine what your problem may be and how to fix it.