I have a Belkin wireless mouse and keyboard. Sometimes when I leave it for a time, when I return neither will respond with the desk top sensor. The only way that I can get it back is to switch off my tower and restart, then all is ok! Any one any thoughts

I only know that some USB devices don't like you putting the PC into 'Standby' mode, if that applies to you. USB devices don't all 'wake up' from standby.

Thanks for that 'pip22' I'll change my setting for Standby and see if that makes a difference, cheers!