Keyboard sometimes doesn't work when resuming from stand-by
Hi all, I'm currently running Vista 32 (Yea yea I know I have to for now) and sometimes when I wake the computer from stand-by the keyboard won't work. The num lock light will be on but no buttons respond, and the num lock light won't go out, nor will any other lights (caps lock and scroll lock) turn on. The keyboard plugs into the purple circular slot not via USB. Today it happened and I unplugged it for a few minutes and it worked, but just unplugging and plugging it back in right away doesn't, I've tried blowing dust out of it but there doesn't seem to be any. The keyboard is old but has been treated well, I'll be getting a new one, but not for a while so I'd like to get this one to work all the time on start-up. Thanks for any help guys!