I'd only try creating Bitdefender Rescue (BR) one more time. BR was one of two options - TDSSKiller or BR.
If you manage to create the BR flash drive, use it.
<!> If you still have trouble putting BR on an external device - change gears to TDSSKiller
Download the exe version of TDSSKiller
Accept the download agreement - scroll down to read make the checkbox active
After it is downloaded, follow the tutorial from Step 5. Configure
You won't have to download anything else in the tut - forget about the VirusTotal uploader, that was a convenience tool.
Running TDSSKiller per the tut, loads in monitor mode which is almost as good as running offline.