I have a machine running Windows XP Professional SP1. About every 2.5 seconds the entire system locks up for about half a second. If you move the mouse in a circle you can watch it freeze, come loose, freeze, come loose, etc. It's a Dell Latitude laptop with 512MB RAM and plenty of free HD space, service tag GNL5J11. It's in a docking station but it freezes both in and out of the dock. This is what I've tried so far: - Unplugging all peripherals (optical mouse, BlackBerry) - BIOS is current - Disabled Indexing service and some other unnecessary services - Updated Video, Sound, Monitor, and Modem drivers - Checked the Event Viewer for Application and System Errors, found nothing out of the ordinary - System Properties -> Advanced -> Performance Settings -> changed system cache to get more performance - DirectX update - Enabled boot logging (see end of post) - Turned off Hardware Acceleration in Display Adapter properties - Deleted *.pf in C:\windows\prefetch - Ad-aware power scan (or whatever the deeper scan is called) and Spybot S&D scan. - Virus scan with Corporate Norton Antivirus. - Disabled ALL startup items with Startup Control Panel - Run RegScrub XP and fixed all problems The freezing does NOT happen in Safe Mode. Also, when in regular mode, if you hibernate and bring it back up the problem disappears. Is this a driver problem? It starts to do this even before you log onto the domain, at the password prompt. It seems like something is polling or scanning or searching every 2.5 seconds and locking up the system. Any ideas? Here's my boot log. Thanks. - Manuel Wanskasmith *************** Service Pack 1 7 2 2004 16:04:19.500 Loaded driver \WINDOWS\system32\ntoskrnl.exe Loaded driver \WINDOWS\system32\hal.dll Loaded driver \WINDOWS\system32\KDCOM.DLL Loaded driver \WINDOWS\system32\BOOTVID.dll Loaded driver ACPI.sys Loaded driver \WINDOWS\System32\DRIVERS\WMILIB.SYS Loaded driver pci.sys Loaded driver isapnp.sys Loaded driver compbatt.sys Loaded driver \WINDOWS\System32\DRIVERS\BATTC.SYS Loaded driver intelide.sys Loaded driver \WINDOWS\System32\DRIVERS\PCIIDEX.SYS Loaded driver pcmcia.sys Loaded driver MountMgr.sys Loaded driver ftdisk.sys Loaded driver PartMgr.sys Loaded driver VolSnap.sys Loaded driver atapi.sys Loaded driver disk.sys Loaded driver \WINDOWS\System32\DRIVERS\CLASSPNP.SYS Loaded driver sr.sys Loaded driver KSecDD.sys Loaded driver Ntfs.sys Loaded driver NDIS.sys Loaded driver vvoice.sys Loaded driver vpctcom.sys Loaded driver vmodem.sys Loaded driver Mup.sys Loaded driver agp440.sys Loaded driver \SystemRoot\System32\DRIVERS\processr.sys Loaded driver \SystemRoot\System32\DRIVERS\CmBatt.sys Loaded driver \SystemRoot\System32\DRIVERS\ati2mtag.sys Loaded driver \SystemRoot\System32\DRIVERS\usbuhci.sys Loaded driver \SystemRoot\System32\DRIVERS\el90xbc5.sys Loaded driver \SystemRoot\System32\DRIVERS\el90xnd5.sys Loaded driver \SystemRoot\System32\DRIVERS\i8042prt.sys Loaded driver \SystemRoot\System32\DRIVERS\SynTP.sys Loaded driver \SystemRoot\System32\DRIVERS\mouclass.sys Loaded driver \SystemRoot\System32\DRIVERS\kbdclass.sys Loaded driver \SystemRoot\System32\DRIVERS\fdc.sys Loaded driver \SystemRoot\System32\DRIVERS\serial.sys Loaded driver \SystemRoot\System32\DRIVERS\serenum.sys Loaded driver \SystemRoot\System32\DRIVERS\parport.sys Loaded driver \SystemRoot\System32\Drivers\Imapi.SYS Loaded driver \SystemRoot\System32\DRIVERS\cdrom.sys Loaded driver \SystemRoot\System32\DRIVERS\redbook.sys Loaded driver \SystemRoot\SYSTEM32\DRIVERS\GEARAspiWDM.sys Loaded driver \SystemRoot\system32\drivers\ac97intc.sys Loaded driver \SystemRoot\System32\DRIVERS\ptserial.sys Loaded driver \SystemRoot\System32\Drivers\Modem.SYS Loaded driver \SystemRoot\System32\DRIVERS\audstub.sys Loaded driver \SystemRoot\System32\DRIVERS\rasl2tp.sys Loaded driver \SystemRoot\System32\DRIVERS\ndistapi.sys Loaded driver \SystemRoot\System32\DRIVERS\ndiswan.sys Loaded driver \SystemRoot\System32\DRIVERS\raspppoe.sys Loaded driver \SystemRoot\System32\DRIVERS\raspptp.sys Loaded driver \SystemRoot\System32\DRIVERS\msgpc.sys Loaded driver \SystemRoot\System32\DRIVERS\psched.sys Loaded driver \SystemRoot\System32\DRIVERS\ptilink.sys Loaded driver \SystemRoot\System32\DRIVERS\raspti.sys Loaded driver \SystemRoot\System32\DRIVERS\rdpdr.sys Loaded driver \SystemRoot\System32\DRIVERS\termdd.sys Loaded driver \SystemRoot\System32\DRIVERS\swenum.sys Loaded driver \SystemRoot\System32\DRIVERS\update.sys Loaded driver \SystemRoot\System32\Drivers\NDProxy.SYS Did not load driver \SystemRoot\System32\Drivers\NDProxy.SYS Loaded driver \SystemRoot\System32\DRIVERS\usbhub.sys Did not load driver \SystemRoot\System32\Drivers\lbrtfdc.SYS Did not load driver \SystemRoot\System32\Drivers\Sfloppy.SYS Did not load driver \SystemRoot\System32\Drivers\i2omgmt.SYS Did not load driver \SystemRoot\System32\Drivers\Changer.SYS Did not load driver \SystemRoot\System32\Drivers\Cdaudio.SYS Loaded driver \SystemRoot\System32\Drivers\Fs_Rec.SYS Loaded driver \SystemRoot\System32\Drivers\Null.SYS Loaded driver \SystemRoot\System32\Drivers\Beep.SYS Did not load driver \SystemRoot\System32\DRIVERS\atimtag.sys Loaded driver \SystemRoot\System32\Drivers\phmmini.sys Loaded driver \SystemRoot\System32\drivers\vga.sys Loaded driver \SystemRoot\System32\Drivers\mnmdd.SYS Loaded driver \SystemRoot\System32\DRIVERS\RDPCDD.sys Loaded driver \SystemRoot\System32\Drivers\Msfs.SYS Loaded driver \SystemRoot\System32\Drivers\Npfs.SYS Loaded driver \SystemRoot\System32\DRIVERS\rasacd.sys Loaded driver \SystemRoot\System32\DRIVERS\ipsec.sys Loaded driver \SystemRoot\System32\DRIVERS\tcpip.sys Loaded driver \SystemRoot\System32\DRIVERS\netbt.sys Loaded driver \SystemRoot\System32\DRIVERS\netbios.sys Did not load driver \SystemRoot\System32\Drivers\PCIDump.SYS Loaded driver \SystemRoot\System32\DRIVERS\rdbss.sys Loaded driver \SystemRoot\System32\Drivers\phw2ksys.sys Loaded driver \SystemRoot\SYSTEM32\DRIVERS\OMCI.SYS Loaded driver \SystemRoot\System32\DRIVERS\mrxsmb.sys Loaded driver \SystemRoot\System32\DRIVERS\hidusb.sys Loaded driver \SystemRoot\System32\DRIVERS\wanarp.sys Loaded driver \SystemRoot\System32\DRIVERS\LHidFlt2.Sys Loaded driver \SystemRoot\System32\DRIVERS\mouhid.sys Loaded driver \SystemRoot\System32\DRIVERS\LMouFlt2.Sys Loaded driver \SystemRoot\System32\Drivers\Fips.SYS Loaded driver \SystemRoot\System32\Drivers\Cdfs.SYS Loaded driver \SystemRoot\System32\drivers\afd.sys Loaded driver \SystemRoot\System32\DRIVERS\nwlnkipx.sys Loaded driver \SystemRoot\System32\DRIVERS\nwlnknb.sys Loaded driver \SystemRoot\System32\DRIVERS\ndisuio.sys Did not load driver \SystemRoot\System32\drivers\afd.sys Loaded driver \SystemRoot\System32\DRIVERS\nwlnkspx.sys Did not load driver \SystemRoot\System32\DRIVERS\nwlnkspx.sys Did not load driver \SystemRoot\System32\DRIVERS\rdbss.sys Did not load driver \SystemRoot\System32\DRIVERS\mrxsmb.sys Loaded driver \SystemRoot\System32\DRIVERS\nwrdr.sys Loaded driver \SystemRoot\System32\DRIVERS\mrxdav.sys Loaded driver \SystemRoot\System32\Drivers\ParVdm.SYS Loaded driver \??\C:\Program Files\Symantec_Client_Security\Symantec AntiVirus\NAVAPEL.SYS Loaded driver \SystemRoot\System32\DRIVERS\srv.sys Did not load driver \SystemRoot\System32\DRIVERS\nwlnkspx.sys Loaded driver \??\C:\Program Files\Symantec\SYMEVENT.SYS Loaded driver \??\C:\Program Files\Symantec_Client_Security\Symantec AntiVirus\NAVAP.sys Loaded driver \??\C:\PROGRA~1\COMMON~1\SYMANT~1\VIRUSD~1\20040630.016\NAVEX15.sys Loaded driver \??\C:\PROGRA~1\COMMON~1\SYMANT~1\VIRUSD~1\20040630.016\NAVENG.sys Loaded driver \SystemRoot\system32\drivers\sysaudio.sys Loaded driver \SystemRoot\system32\drivers\splitter.sys Loaded driver \SystemRoot\system32\drivers\aec.sys Loaded driver \SystemRoot\system32\drivers\wdmaud.sys Loaded driver \SystemRoot\system32\drivers\swmidi.sys Loaded driver \SystemRoot\system32\drivers\DMusic.sys Loaded driver \SystemRoot\system32\drivers\kmixer.sys Loaded driver \SystemRoot\system32\drivers\drmkaud.sys

I had a problem like that once, had to reformat the hd and reinstall the OS, and then the problem was fixed. Pingless

try reinstalling windows over itself rather than reformatting if you cant solve it any other way. you wont lose your data that way.