I'm using one of these with Windows 7 Ultimate, and am having a problem with keys repeatedly transmitting to the PC (as if they were being held down). This usually happens after the PC has been resumed from S3 sleep mode.
For example, if I power up the PC from S3 sleep mode, switch on the Efo Remote Keyboard, then press the letter "B", it continuously transmits the letter B. If I click the Windows Start button the command line fills up with the letter "b". If I open Notepad it also fills up with the same letter. The only way to stop this is to disconnect the Efo USB receiver and re-connect it.
If I put the PC into sleep mode when the problem occurs, then wake it again, the letter continues to repeat, even if I have not switched on the Efo Keyboard.
Does anyone have any idea how to address this? My motherboard is an Asus M4A785D-M PRO AM3 Motherboard (AMD Athlon II X2 240E Dual Core CPU ).