Unknown installed app after factory reset

I do the factory reset of my acer iconia, suddenly theres a lot of application thats already installed including !!%@ site and sexy stuff and this ET swipe which is im not familiar!!! And i cant uninstalled it, just disable only. What happen. I cant update its system too its hidden, i cant click it. PLEASE HELP!

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0