Is your computer running slow? Infected with viruses/malware/trojans? Trouble booting up or freezes constantly? You have come to the right place. Sierra Computer Cleanup specializes in making home visits to assess and figure out the challenges or problems you may be experiencing with your existing desktop or laptop computer in Corona, CA. Other services include VIRUS/MALWARE REMOVAL, INSTALL & UPDATE PROGRAMS, REPAIR WINDOWS / MAC OSX ISSUES and HARDWARE / NETWORK CHANGES.