Cable problems.. it will get worse it will turn off for 2-3 minutes then turn back on in the middle of the game it turns off again until it completely turns off. I changed 3 1.1 till now and all three of them because of this Mouse not recognized.
Take it to some who is an electrician he will find the place where the cable is damaged and replace the whole thing or just cut the part where is damaged and make the cable shorter.
does it freezes in windows?
if yes open the mouse check or repair the cable
if no, then reinstall cs or game or chck for viruses in pc or upgrade your pc.
re-install the windows again and use good anti virus rather than anti-malware or spybot shit, i would suggest u to use AVG or avira.
if still problem, throw the mouse in dustbin -_-