spoolsv.exe hogging 99% of cpu - the fix. Here's the fix. First, get some breathing room - go to Control Panel, Administrative Tools, Services and stop the Print Spooler. Turn off the printer. Now go to C:\WINDOWS\system32\spool\PRINTERS and delete the files there. I found '00020.SHD' and '00020.SPL'. Now turn your printer back on and restart the service. Check task manager, spoolsv.exe should be at 00%. Whew!