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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dad8.exe dadapp.exe dadtray.exe daemon.exe damon.exe
dap.exe DarwinStreamingServer.exe datalayer.exe datemanager.exe datray.exe
dazzler.exe db2dasrrm.exe db2govds.exe db2jds.exe db2rcmd.exe
db2sec.exe db2syscs.exe DbAu.exe dbserver.exe dc2006.exe
dc6cw.exe DCC_send.exe dcfssvc.exe dcomcfg.exe DComX.exe
dcsuserprot.exe ddactivemenu.exe ddcman.exe ddm_d.exe ddrvmon.exe
DDS.exe de_serv.exe deaconalertservice.exe defender.exe defender19a.exe
defender23.exe defender25.exe defwatch.exe delayrun.exe deletesatellite.exe
delldmi.exe dellmmkb.exe delmsbb.exe desk98.exe DeskAdKeep.exe
DeskAdServ.exe deskup.exe detector.exe devdetect.exe devdtct2.exe
devgulp.exe devldr.exe devldr16.exe devldr32.exe devmsgr.exe
dfndrc_2.exe DFNDRFF_13.exe dfndrff_14.exe dfndrff_15.exe dguard.exe
Dhbrowser.exe Dhsvr.exe dhu.exe DHUpdt.exe diagent.exe
digservices.exe digstream.exe directcd.exe directoutputmanager.exe directx.exe
dirote.exe DisableWinXPWZCS.exe discwizardmonitor.exe DiskImageService.exe distnoted.exe
dit.exe ditexp.exe DivX.exe divxsm.exe djfgucxr.exe
djsnetcn.exe DKIcon.exe DKservice.exe dl.exe dlactrlw.exe
dlbabmgr.exe dlbcserv.exe dlbfbmgr.exe dlbfbmon.exe dlbkbmgr.exe
dlbkbmon.exe dlbtbmgr.exe dlbtbmon.exe dlbtcoms.exe dlbubmgr.exe
dlbubmon.exe dlbucoms.exe dlbxcoms.exe dlbxmon.exe dlccmon.exe
dlg.exe dllcmd32.exe dllml.exe dllreg.exe dlm.exe
DLPSP.exe DLPWDNT.exe DLSDBNT.exe dlt.exe dmadmin.exe
dmcenter.exe dmedia.exe DMHKey.exe dmremote.exe dmxlauncher.exe
dnsrslvr.exe dnxf.exe dockapp.exe doriot.exe dot1xcfg.exe
DownloadManagerR.exe dpagnt.exe dpcproxy.exe dpcstart.exe dpfusmgr.exe
dphost.exe dpi.exe dp-k13w13.exe DPMW32.exe dpps2.exe
Dragdiag.exe DragDrop.exe dreg.exe drempels.exe drgtodsc.exe
drivehqclient.exe driver64.exe driverini.exe drst.exe drv.exe
drvddll.exe DrvListnr.exe drvlsnr.exe drvsys.exe dsagnt.exe
dsb.exe dsca.exe dsentry.exe DSHMap.exe dslagent.exe
dslaunch.exe dslmon.exe dslstat.exe dsNcService.exe DSSAgent.exe
dvd43_tray.exe dvdcheck.exe dvdlauncher.exe DVDRAMSV.exe DVDTray.exe
dvpapi.exe DvzincMsgr.exe DvzMsgr.exe dw.exe dwdsregt.exe
dwrcs.exe dwrcst.exe dxc.exe DynDNS.exe