Hello and welcome to PCHF tdotmill.
Let see if we can help you out.
Try the following:
- Try change the keyboard layout within control panel, if you are using windows xp go to START - CONTROL PANEL - REGIONAL AND LANGUAGE OPTIONS - Languages - Details. Then change the keyboard to English (united states) and see whether it works.
- Try and disconnect then reconnect your keyboard to the PC.
- If you boot your PC into safemode does it work normally?
- Do you have another keyboard that you can test on this PC?