Sounds like a computer problem to me and not an issue with the software or files. As for odin not recognizing your phone get samsung kies on your pc and install the drivers that's what I had to do. There is nothing wrong with the stock rooted system file if your computer is freezing it's not from the file everything worked fine for me and most everyone that used any of these files. Seems as though the only people having issues are not following instructions.
This is the report i just got while trying to flash TWRP.
<ID:0/006> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> recovery.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/006> Odin v.3 engine (ID:6)..
<ID:0/006> File analysis..
<ID:0/006> SetupConnection..
<ID:0/006> Initialzation..
<ID:0/006> Get PIT for mapping..
<ID:0/006> Firmware update start..
<ID:0/006> SingleDownload.
<ID:0/006> recovery.img
<ID:0/006> NAND Write Start!!
<ID:0/006> FAIL! (Auth)
<ID:0/006>
<ID:0/006> Complete(Write) operation failed.
<OSM> All threads completed. (succeed 0 / failed 1)
any ideas?