i have a problem with this keyboard always disconnecting and/or keys get stuck and the last key will go across likeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee this till i unplug it and when i do that it somtimes makes the usb sound that something was disconnected or pluged in. then sometimes isnt recognized. is there a firmware for this keyboard? or a known fix? ive seen a few cases on google but they wasnt anything really final.