Now I can't use it, though it appears to still be present. It won't show on the screen when I click on it.1 person needs an answerI do too

Hi PWxx, 1. Check if any error message or error code is listed in event viewer, you may refer: How to view and manage event logs in Event Viewer in Windows XP:http://support.microsoft.com/kb/308427 2. Boot the computer in safe mode, to boot the computer in safe mode with networking:a. Restart the computer and press and hold F8 key (Press and hold f8 key before the windows logo).b. From the advanced boot option select ‘Safe mode’. Regards:Samhrutha G S - Microsoft Support.Visit our Microsoft Answers Feedback Forum and let us know what you think.

Thank you, Samhrutha.There was no error code.After trying several different things (before seeing your response), I finally shut the computer off and turned it on again and the on-screen keyboard reappeared and has since remained functional.However, this problem had never occurred before.Again, thank you for your suggestions.PWxx