My aunt has a Vaio Sony laptop,with windows vista home.Her dvd drive isn't displaying anything when you put a disk in it. so I blew air in it ,nothing happened.I went into My computer clicked on it .It said to put a disk in ,but there was 1 already. So I then went to Device manager and I seenothing wrong with the dvd but Microsoft 6to4 Adapter,Microsoft 6to4 Adapter #2,Microsoft ISATAP Adapter #2 all have code 31 errors, I tried to update the drivers but it said they wre upto date. Also I see under Other Devices, 2 unknown devices, both with code 28 errors and I can't update the drivers. There is nothing connected to this computer ,so the other devices confuse me as to what they even are.