Sluggish PCs are commonly caused programs running in the background, which in some cases are started automatically when Windows starts up.

Sometimes these programs are useful but quite often, however, are not needed, and some many cases may be disgusted as trojans, spywares, malwares and even viruses.

The pages below provide a guide on the usefulness these background tasks, Windows 98 / 2000 / XP / Vista / 7 services, and Windows Startups, and removal procedures when recommended.

Common Windows Processes: A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z

Common Windows Services: A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z

Common Third Party Processes: 0-A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z

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nail.exe Naimag32.exe naprdmgr.exe napster.exe  navapsvc.exe
navbrowser.exe Navmgrd.exe nbj.exe ndetect.exe ndstray.exe 
nero.exe nerocheck.exe netdevsw.exe netscp.exe  netwaiting.exe
network.exe ngvpnmgr.exe nhksrv.exe nisserv.exe nkbmonitor.exe
nkvmon.exe nl.exe n-lookup.exe nls.exe nmain.exe 
nmbgmonitor.exe nod32kui.exe norton update.exe notepad.exe npfmntor.exe 
nprotect.exe npscheck.exe ntos.exe  ntunecmd.exe ntuneservice.exe
nutsrv4.exe nvcsched.exe  nvctrl.exe nvraidservice.exe nvsched.exe
nvsvc32.exe nwiz.exe