I don’t think it’s necessary at this point to post your address.
I’m assuming that you’re using EWBF’s CUDA miner for your 1080 Ti? You say you hit “S” which indicates a Claymore Miner so unless I’m confused, it doesn’t sound like you’re using the proper miner for your card.
Once you’re using EWBF’s miner (which btw gives the highest Sol/s for nVidia cards), you can try using this:
This will monitor EWBF’s log and restart the miner or computer when necessary. See if that helps.