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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c4nn0t.exe ca.exe CachemanXP.exe caftf.exe  caissdt.exe
Calcheck.exe calendar.exe calmain.exe CamCheck.exe CameraAssistant.exe
Camtray.exe canada.exe capfax.exe caponn.exe cappswk.exe
caprpcsk.exe captainhook.exe carboniteservice.exe carboniteui.exe carpserv.exe
casclient.exe cashback.exe casino.exe casstub.exe cavrid.exe
cavtray.exe caxchg.exe cbinst$.exe ccaagent.exe ccap.exe
ccapp.exe ccc.exe cccredmgr.exe ccd.exe ccevtmgr.exe
cclaw.exe ccleaner.exe cclgview.exe ccmon.exe ccmsnd.exe
ccproxy.exe ccpwdsvc.exe ccpxysvc.exe ccregvfy.exe ccsetmgr.exe
ccsvchst.exe ccsvchst.exe CCZoop05.exe cd_load.exe cd32.exe
cdac11ba.exe cdantsrv.exe cdasc8.exe cdproxyserv.exe ceekey.exe
cepmtray.exe cfd.exe cfg32.exe cfgdll32.exe cfgwiz.exe
cfp.exe cfsserv.exe CFSvcs.exe cg16eh.exe cgmenu.exe
chamclock.exe Channelup.exe chcenter.exe CHKADMIN.exe chkfont.exe
chkras.exe Chotkey.exe cij3p2ps.exe Cinetray.exe CingularCCM.exe
cissi.exe citivan.exe CJet.exe Cjstcom.exe cjstlst.exe
cka.exe ClamTray.exe clcapsvc.exe CleanCache.exe cleanup.exe
cledx.exe cli.exe Clipsync.exe clistart.exe clmlserver.exe
cloaker.exe clonecdtray.exe clrschp038.exe clsched.exe CM_camera.exe
CManager.exe cmcfg32.exe cmd32.exe cmdagent.exe cmesys.exe
cmgrdian.exe cmluc.exe cmmpu.exe cmst32.exe cnfrm.exe
cnxdsltb.exe CnxMon.exe cnyhkey.exe cocimanager.exe coloreal.exe
comcomp.exe coment.exe comHost.exe command command(2)
commuincation_helper.exe communications_helper.exe companion.exe compaq-rba.exe comsmd.exe
comsocks.exe comsvcs5.exe config32.exe conime.exe conmgr.exe
CookiePatrol.exe core.exe CorePlayer.exe Couponica.exe CPD.exe
cpdclnt.exe cpdnbbcmgr.exe cpf.exe CPLBCL53.exe CPortPatch.exe
cpqalert.exe cpqdfwag.exe cpqdmi.exe cpqeadm.exe cpqeaksystemtray.exe
cpqeaUI.exe cpqek.exe cpqnpcss.exe cpqset.exe CpRmtKey.exe
CPSHelpRunner.exe cpucool.exe cpunumber.exe Crashmon.exe crauto.exe
createcd.exe createcd50.exe creative.exe CreativeLicensing.exe CriticalUpdater.exe
crypserv.exe cseraser.exe csinsm32.exe Csksvr.exe csrrs.exe
csrss(2).exe csrss(3).exe csrss(4).exe csrss(5).exe csrss.exe
Css_1630.exe cssauth.exe cssauthe.exe css-avs.exe cssurf.exe
ct.exe ctcmsgo.exe ctdetect.exe ctdvddet.exe cteaxspl.exe
ctfmon.exe cthelper.exe ctlauncher.exe ctlcntr.exe ctltray.exe
ctmix32.exe ctnmrun.exe CtNotify.exe ctrlvol.exe ctsvccda.exe
ctsvolfe.exe ctsysvol.exe ctxfihlp.exe ctxfireg.exe ctxfispi.exe
CueAgent_Srv.exe CUREIT.exe CursorXP.exe cusrvc.exe cvpnd.exe
cvrsss.exe cwbckver.exe cwbinhlp.exe cwbsvstr.exe cwbwlwiz.exe
cygrunsrv.exe cyxipjsxdua.exe
command(3)