I was copying my new DVD of 300 to my hard drive yesterday but did not get very far. It messed up my WIFI and now "My computer" shows no DVD-ROM drive, it wont play any disks. Have reinstalled the drivers to no avail. By the way I am using an Acer Aspire 5610 laptop. All so I have a U3 thumb drive that was working fine now when I plug it in it say I have not got Win XP, or Vista ( wich I have Vista) so it wont work. Beware people I think it put a virus or some such on my comp. Can any one help me or has this happened to any one else?