Samsung Galaxy S3 - stuck on splash screen after deleting CM10

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http://forums.androidcentral.com – So I installed cyanogenmod 10.1 then deleted it because of problems i was having then i uninstalled and now there is no OS to run so when i turn it on it either gets stuck on the Samsung Galaxy s3 bit or the battery shows up and it gets frozen on loading bit and i can turn it on with recovery mode or download mode but I CANT connect my s3 to the computer so i can put a rom on it. im using TWRP (HowTos)