My Windows 7 Ultimate activated clients require administrator authorization when installing software or hardware. After starting the install the administrator access box pops up. When I, the administrator, start typing in my credentials, only random numbers appear instead of the letters I type. This only happens when the administrator access is required. This happens on Lenovo and HP computers. The keyboads and mice work as they should all other times. There are no other input devices, wedges, etc. Just a wired keyboard and mouse.

Hi, Before going further, would you please let me know if you installed any program before the issue occurring? I suspect it is related to third party software or malware. Please use your security software to scan the computer or use Microsoft products. Microsoft Safety Scanner http://www.microsoft.com/security/scanner/en-us/default.aspx Microsoft Security Essentials http://www.microsoft.com/en-sg/security_essentials/default.aspx If the issue persists, try to perform the clean boot, create a new user account or enable built-in administrator account to check the result. Best Regards, Niki Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.