Windows XP machine that suddenly had the mouse & keyboard stop working. I have tried USB mice, USB keyboards, PS/2 mice and PS/2 keyboards and all of them behave (or don't behave) the same way. The mouse & keyboard work fine on other systems and are 100% known to work. The mouse & keyboard don't work in Safe Mode or regular Windows XP.
That model has PS/2 ports for a keyboard and mouse, as indicated by item #4 and #12 in this picture of the rear of that case. HP ProDesk 400G3 Microtower. Use a PS/2 keyboard and mouse. They will be recognized without the USB drivers.
Reputation: 41. Location: India. #2. 08-10-2013, 07:29 AM. Make sure your keyboard and mouse plugeed well in cpu and you mapped your buttons well in lillypad plugin . Core i3 9100f 3.6Ghz. RAM=8GB.Here’s a quick guide on running the Windows 10 keyboard troubleshooter to fix the keyboard typing the wrong characters issue: Press Windows key + R to open up a new Run command. Next, type or paste “ ms-settings:troubleshoot ” and hit Enter to open the built-in Troubleshooter.
Solution. #2. if other PS/2 devices are also not functioning properly when using this adapter; the adapter has malfunctioned. if still within the time-frame, request a refund. if you don't still have old PS/2 devices around to test; contact the adapter's manufacturer support and ask them directly if it should work with this type of device.
Double-click the UpperFilters:REG_MULTI_SZ: Lmouflt2 mouclass value, and then remove only the Lmouflt2 entry. On the Registry menu, click Close. On the Registry menu, click Exit. Restart. the computer with the mouse/keyboard problems. After the computer. restarts, the mouse and keyboard should be functional..