Welcome aboard aj906
If you don't get sorted by reverting back to earlier drivers, try the following additional measures.
When you've deleted the SH3 folder from C/MyDocs, use the SH3 disc to perform the uninstall operation, then d/l regvac (it's a free programme).....this should purge your systems registry of any unused or duplicate files.
The advice from Irish is sound.....my advice is simply intended as an additional aide.