加州老李and 其他大師幫看看spoolsv problem

my laptop started to have a hang during bootup since yesterday - spoolsv is using up 50% of memory (it's for printer) observed in task manager.  updated virus definition and scanned but found nothing.  this program does sit in windows/system32 folder. 

noticed a scenario - some times the "printer and faxes" folder were blank but other times the items were there.  the two symptoms might be related but not sure which causes which.

any clue what need to do to cure?  (try to avoid reformat).  thanks.