I would do a search inside *.inf files only. Once you find the INF file that references the SYS file, then remove the INF file and SYS file, then re-install your driver. EDIT: I did a search for "b57nd60x", and found these three files: drvindex.dat netb57vx.inf netb57vx.pnf I would leave drvindex.dat alone, but delete the other two, then reinstall your driver. Inside the INF file, I only found reference to: b57nd60x.sys Delete this file also