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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i1impipe.exe iaanotif.exe iaantmon.exe iam.exe iamapp.exe
Iamsetup.exe iao.exe iap.exe ibackup.exe ibm00001.exe
ibm00001.exe ibm00003.exe ibmmessages.exe ibmpmsvc.exe ibmprc.exe
ibserver.exe ICalClk.exe icepack.exe ICM.exe icmon.exe
ico.exe iconclnt.exe iconfig.exe icq.exe icqlite.exe
ICQLite.exe icsmgr.exe IcVzMon.exe icwconn1.exe ida.exe
idd11.tmp.exe idrivert.exe idxclnr.exe iedll.exe IEDriver.exe
ieexplorer.exe iegr32.exe iehost.exe iesmn.exe ieudinit.exe
iewersv.exe IEWIND.exe iexplore(2).exe iexplore(3).exe iexplore(4).exe
iexplore.exe iexplorer.exe iexplores.exe ifrmewrk.exe igdctrl.exe
igdctrl.exe igfxext.exe igfxpers.exe igfxsrvc.exe igfxtray.exe
igfxtray.exe iHPDetect.exe ikernel.exe ikeymain.exe ImapiHelper.exe
ImapiRox.exe imapp.exe imgicon.exe IMNames.exe IMonNT.exe
IMonTray.exe imsmain.exe IMStart.exe IM-svr.exe imwireup.exe
incd.exe incdsrv.exe incmail.exe  indexcleaner.exe indexsearch.exe
IndicatorUty.exe inetcntrl.exe inetinfo.exe Infuzer.exe infwin.exe
inicio.exe inkmonitor.exe InoRpc.exe InoRT.exe InoTask.exe
InstallHelper.exe InstallStub.exe InstantAccess.exe intdel.exe integrator.exe
intel32.exe intell32.exe intell321.exe intelmem.exe  internat.exe
intmonp.exe intnets.exe Intrenat.exe inventory.exe iopengl.exe
Iosdt.exe Iowatch.exe ipclient.exe iphsend.exe ipmon32.exe 
ipnetwork.exe ipodmanager.exe ipodservice.exe ipodservice.exe ipodsrv.exe
ipodwatcher.exe ipsecdialer.exe ipseclog.exe IPSecMon.exe ipwins.exe
iqrobot.exe irdvxc.exe IreIKE.exe irmon.exe irssyncd.exe
isafe.exe isafe.exe isamini.exe isamini.exe.exe isamntr.exe
isamonitor.exe isamonitor.exe  Isass.exe isbmgr.exe isbmgr.exe
Isdbdc.exe ishost.exe ISMINI.exe isnotify.exe ispnews.exe
ispnews.exe ispwdsvc.exe iss_srvr.exe issch.exe issch.exe
issearch.exe isstart.exe ISStart.exe issvc.exe istsvc.exe
isuspm.exe itbill.exe itmrtsvc.exe itouch.exe ItsD7.exe
iTunes.exe ituneshelper.exe itype.exe ivpsvmgr.exe iw.exe
Iwar.exe iwatch.exe Iwctrl.exe IzyMail.exe I_26dadCC.exe