p170sm_user

Thanks. I wonder if this helps:- Google found two other people whose Win7's did not boot (left the screen blank, or frozen on the logo) and for whom the last line in their bootlog was also "Did not load driver \SystemRoot\system32\DRIVERS\avgntflt.sys": http://forum.videohelp.com/threads/369425-Stuck-with-black-screen-of-death (... a very interesting thread) http://www.pctipp.ch/forum/showthread.php?29934-Hilfe-Windows-7-Startprobleme (I can see from his other posts he resolved the problem but there's no detail how) ======== UPDATE Hiding ipnat.sys and secdrv.sys didn't change the boot behaviour. I now installed the Intel HD4600 graphics driver and rebooted normally, ending up with a black screen. The bootlog was a little longer, to reflect the Intel graphics. It added: Loaded driver \SystemRoot\System32\drivers\dxgkrnl.sys Loaded driver \SystemRoot\system32\DRIVERS\igdkmd64.sys Loaded driver \SystemRoot\system32\DRIVERS\IntcDAud.sys Loaded driver \SystemRoot\system32\DRIVERS\usbccgp.sys Loaded driver \SystemRoot\System32\Drivers\usbvideo.sys and subtracted (omitted): Loaded driver \SystemRoot\system32\drivers\HdAudio.sys and ended with: ...... Did not load driver \SystemRoot\system32\DRIVERS\avgntflt.sys Loaded driver \SystemRoot\system32\DRIVERS\monitor.sys Loaded driver \SystemRoot\system32\DRIVERS\usbccgp.sys Loaded driver \SystemRoot\System32\Drivers\usbvideo.sys Loaded driver \SystemRoot\system32\DRIVERS\usbccgp.sys Loaded driver \SystemRoot\System32\Drivers\usbvideo.sys I noticed that the usbccgp.sys and usbvideo.sys drivers are apparently successfully loaded twice. So is WinUSB but that was also loaded twice in the bootlog from before the Intel HD4600 driver install. Summary: I'm none the wiser - but could this be a clue to someone more knowledgeable?

Thanks so much. In a couple of days I'll be going to where I've got my Win7SP1 disk stored, and I'll pick it up. Just so that I know exactly what you mean by: "doing a "clean boot"; disabling everything except microsoft services and your wifi" in Win7SP1, this is what I think you want me to do is: In MSCONFIG, select and apply the "Diagnostic startup - Load basic devices and services only" setting. This enforces a "Selective Startup" with no startup items selected and with only the following services enabled: - Group Policy Client - RPC Endpoint Manager - Task Scheduler I've tried doing this before and it still stays stuck on the Win7 logo screen. I will do it again shortly and report back with a bootlog file. Meanwhile, here is the content of ntbtlog.txt from a recent normal startup (having previously removed both Nvidia and Intel Iris GPU drivers and DDU'd, so pre-boot devmgmt.msc showed 2 "Standard VGA Graphics Adapters"). This, as usual, stays stuck on the Win7 logo screen: Service Pack 1 date/time Loaded driver \SystemRoot\system32\ntoskrnl.exe Loaded driver \SystemRoot\system32\hal.dll Loaded driver \SystemRoot\system32\kdcom.dll Loaded driver \SystemRoot\system32\mcupdate_GenuineIntel.dll Loaded driver \SystemRoot\system32\PSHED.dll Loaded driver \SystemRoot\system32\CLFS.SYS Loaded driver \SystemRoot\system32\CI.dll Loaded driver \SystemRoot\system32\drivers\Wdf01000.sys Loaded driver \SystemRoot\system32\drivers\WDFLDR.SYS Loaded driver \SystemRoot\system32\drivers\ACPI.sys Loaded driver \SystemRoot\system32\drivers\WMILIB.SYS Loaded driver \SystemRoot\system32\drivers\msisadrv.sys Loaded driver \SystemRoot\system32\drivers\pci.sys Loaded driver \SystemRoot\system32\drivers\vdrvroot.sys Loaded driver \SystemRoot\system32\DRIVERS\iusb3hcs.sys Loaded driver \SystemRoot\System32\drivers\partmgr.sys Loaded driver \SystemRoot\system32\DRIVERS\compbatt.sys Loaded driver \SystemRoot\system32\DRIVERS\BATTC.SYS Loaded driver \SystemRoot\system32\drivers\volmgr.sys Loaded driver \SystemRoot\System32\drivers\volmgrx.sys Loaded driver \SystemRoot\System32\drivers\mountmgr.sys Loaded driver \SystemRoot\system32\drivers\atapi.sys Loaded driver \SystemRoot\system32\drivers\ataport.SYS Loaded driver \SystemRoot\system32\drivers\msahci.sys Loaded driver \SystemRoot\system32\drivers\PCIIDEX.SYS Loaded driver \SystemRoot\system32\drivers\amdxata.sys Loaded driver \SystemRoot\system32\drivers\fltmgr.sys Loaded driver \SystemRoot\system32\drivers\fileinfo.sys Loaded driver \SystemRoot\System32\Drivers\Ntfs.sys Loaded driver \SystemRoot\System32\Drivers\msrpc.sys Loaded driver \SystemRoot\System32\Drivers\ksecdd.sys Loaded driver \SystemRoot\System32\Drivers\cng.sys Loaded driver \SystemRoot\System32\drivers\pcw.sys Loaded driver \SystemRoot\System32\Drivers\Fs_Rec.sys Loaded driver \SystemRoot\system32\drivers\ndis.sys Loaded driver \SystemRoot\system32\drivers\NETIO.SYS Loaded driver \SystemRoot\System32\Drivers\ksecpkg.sys Loaded driver \SystemRoot\System32\drivers\tcpip.sys Loaded driver \SystemRoot\System32\drivers\fwpkclnt.sys Loaded driver \SystemRoot\system32\drivers\vmstorfl.sys Loaded driver \SystemRoot\system32\drivers\volsnap.sys Loaded driver \SystemRoot\System32\Drivers\spldr.sys Loaded driver \SystemRoot\System32\drivers\rdyboost.sys Loaded driver \SystemRoot\System32\Drivers\mup.sys Loaded driver \SystemRoot\System32\drivers\hwpolicy.sys Loaded driver \SystemRoot\System32\DRIVERS\fvevol.sys Loaded driver \SystemRoot\system32\drivers\disk.sys Loaded driver \SystemRoot\system32\drivers\CLASSPNP.SYS Loaded driver \SystemRoot\System32\DRIVERS\cmderd.sys Loaded driver \SystemRoot\system32\DRIVERS\cdrom.sys Loaded driver \SystemRoot\system32\DRIVERS\cmdguard.sys Loaded driver \SystemRoot\System32\Drivers\Null.SYS Loaded driver \SystemRoot\System32\Drivers\Beep.SYS Loaded driver \SystemRoot\System32\drivers\vga.sys Loaded driver \SystemRoot\System32\DRIVERS\RDPCDD.sys Loaded driver \SystemRoot\system32\drivers\rdpencdd.sys Loaded driver \SystemRoot\system32\drivers\rdprefmp.sys Loaded driver \SystemRoot\System32\Drivers\Msfs.SYS Loaded driver \SystemRoot\System32\Drivers\Npfs.SYS Loaded driver \SystemRoot\system32\DRIVERS\tdx.sys Loaded driver \SystemRoot\System32\DRIVERS\cmdhlp.sys Loaded driver \SystemRoot\system32\drivers\afd.sys Loaded driver \SystemRoot\System32\DRIVERS\netbt.sys Loaded driver \SystemRoot\system32\DRIVERS\wfplwf.sys Loaded driver \SystemRoot\system32\DRIVERS\pacer.sys Loaded driver \SystemRoot\system32\DRIVERS\vwififlt.sys Loaded driver \SystemRoot\system32\DRIVERS\bflwfx64.sys Loaded driver \SystemRoot\system32\DRIVERS\inspect.sys Loaded driver \SystemRoot\system32\DRIVERS\vpcnfltr.sys Loaded driver \SystemRoot\system32\DRIVERS\netbios.sys Loaded driver \SystemRoot\system32\DRIVERS\wanarp.sys Loaded driver \SystemRoot\system32\drivers\vpcvmm.sys Loaded driver \SystemRoot\system32\DRIVERS\termdd.sys Loaded driver C:\Program Files\SUPERAntiSpyware\SASKUTIL64.SYS Loaded driver C:\Program Files\SUPERAntiSpyware\SASDIFSV64.SYS Loaded driver \SystemRoot\system32\DRIVERS\rdbss.sys Loaded driver \SystemRoot\system32\drivers\nsiproxy.sys Loaded driver \SystemRoot\system32\DRIVERS\mssmbios.sys Loaded driver \SystemRoot\System32\drivers\discache.sys Loaded driver \SystemRoot\system32\drivers\csc.sys Loaded driver \SystemRoot\System32\Drivers\dfsc.sys Loaded driver \SystemRoot\system32\DRIVERS\blbdrive.sys Loaded driver \SystemRoot\system32\DRIVERS\avkmgr.sys Loaded driver \SystemRoot\system32\DRIVERS\avipbb.sys Loaded driver \SystemRoot\system32\DRIVERS\tunnel.sys Loaded driver \SystemRoot\system32\DRIVERS\vgapnp.sys Loaded driver \SystemRoot\system32\DRIVERS\HDAudBus.sys Loaded driver \SystemRoot\system32\DRIVERS\iusb3xhc.sys Loaded driver \SystemRoot\system32\DRIVERS\HECIx64.sys Loaded driver \SystemRoot\system32\drivers\usbehci.sys Loaded driver \SystemRoot\system32\DRIVERS\1394ohci.sys Loaded driver \SystemRoot\system32\DRIVERS\RtsBaStor.sys Loaded driver \SystemRoot\system32\DRIVERS\Rt64win7.sys Loaded driver \SystemRoot\system32\DRIVERS\Ak27x64.sys Loaded driver \SystemRoot\system32\DRIVERS\vwifibus.sys Loaded driver \SystemRoot\system32\DRIVERS\i8042prt.sys Loaded driver \SystemRoot\system32\DRIVERS\kbdclass.sys Loaded driver \SystemRoot\system32\DRIVERS\mouclass.sys Loaded driver \SystemRoot\system32\DRIVERS\wmiacpi.sys Loaded driver \SystemRoot\system32\DRIVERS\intelppm.sys Loaded driver \SystemRoot\system32\DRIVERS\CmBatt.sys Loaded driver \SystemRoot\system32\DRIVERS\CompositeBus.sys Loaded driver \SystemRoot\system32\DRIVERS\AgileVpn.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\rassstp.sys Loaded driver \SystemRoot\system32\DRIVERS\rdpbus.sys Loaded driver \SystemRoot\system32\DRIVERS\serscan.sys Loaded driver \SystemRoot\system32\drivers\ksthunk.sys Loaded driver \SystemRoot\system32\DRIVERS\swenum.sys Loaded driver \SystemRoot\system32\DRIVERS\umbus.sys Loaded driver \SystemRoot\system32\DRIVERS\vpcusb.sys Loaded driver \SystemRoot\system32\DRIVERS\vpchbus.sys Loaded driver \SystemRoot\system32\DRIVERS\usbhub.sys Loaded driver \SystemRoot\System32\Drivers\NDProxy.SYS Did not load driver \SystemRoot\System32\Drivers\NDProxy.SYS Did not load driver \SystemRoot\System32\Drivers\NDProxy.SYS Did not load driver \SystemRoot\System32\Drivers\NDProxy.SYS Did not load driver \SystemRoot\System32\Drivers\NDProxy.SYS Loaded driver \SystemRoot\system32\drivers\HdAudio.sys Loaded driver \SystemRoot\system32\DRIVERS\iusb3hub.sys Loaded driver \SystemRoot\system32\drivers\RTKVHD64.sys Loaded driver \SystemRoot\system32\drivers\MBfilt64.sys Loaded driver \SystemRoot\system32\DRIVERS\monitor.sys Loaded driver \SystemRoot\system32\drivers\luafv.sys Loaded driver \SystemRoot\system32\DRIVERS\avgntflt.sys Loaded driver \SystemRoot\system32\drivers\WudfPf.sys Loaded driver \SystemRoot\system32\DRIVERS\WinUSB.sys Loaded driver \SystemRoot\system32\DRIVERS\hidusb.sys Loaded driver \SystemRoot\system32\DRIVERS\mouhid.sys Loaded driver \SystemRoot\system32\DRIVERS\point64.sys Loaded driver \SystemRoot\system32\DRIVERS\WinUSB.sys Loaded driver \SystemRoot\system32\DRIVERS\WUDFRd.sys Loaded driver \SystemRoot\system32\DRIVERS\lltdio.sys Loaded driver \SystemRoot\system32\DRIVERS\nwifi.sys Loaded driver \SystemRoot\system32\DRIVERS\ndisuio.sys Loaded driver \SystemRoot\system32\DRIVERS\rspndr.sys Loaded driver \SystemRoot\system32\DRIVERS\vwifimp.sys Loaded driver \SystemRoot\system32\drivers\HTTP.sys Loaded driver \SystemRoot\system32\DRIVERS\bowser.sys Loaded driver \SystemRoot\System32\drivers\mpsdrv.sys Loaded driver \SystemRoot\system32\DRIVERS\mrxsmb.sys Loaded driver \SystemRoot\system32\DRIVERS\mrxsmb10.sys Loaded driver \SystemRoot\system32\DRIVERS\mrxsmb20.sys Loaded driver \SystemRoot\system32\DRIVERS\avnetflt.sys Loaded driver \SystemRoot\system32\drivers\peauth.sys Loaded driver \??\C:\Windows\SysWOW64\speedfan.sys Loaded driver \SystemRoot\System32\DRIVERS\srvnet.sys Loaded driver \SystemRoot\System32\drivers\tcpipreg.sys Loaded driver \SystemRoot\System32\DRIVERS\srv2.sys Loaded driver \SystemRoot\System32\DRIVERS\srv.sys Did not load driver \SystemRoot\System32\DRIVERS\srv.sys Loaded driver \SystemRoot\system32\DRIVERS\asyncmac.sys Did not load driver \SystemRoot\system32\DRIVERS\avgntflt.sys [END OF ntbtlog.txt FILE] I added some highlighting. Unfortunately, I don't have any bootlog old enough to predates the problem, to compare this with, so I don't know what would normally come next after the failed second load attempt (it would fail because it is already loaded) of avgntflt.sys (a component of the Avira AV system). Since what is coming next that is causing the hang (I think) I've googled to see what drivers normally come immediately after the second attempt to load avgntflt.sys (which is quite normal behaviour shown by thousands of bootlogs which continue uneventfully). Having invested an hour with Google Search, the usual ones which immediately follow avgntflt.sys(2) in the boot sequence are: srv.sys, peauth.sys, mpsdrv.sys, lltdio.sys, mbam.sys, ipnat.sys and secdrv.sys (each occasionally comes immediately after avgntflt.sys(2)). The first four have been loaded already and are in ntbtlog.txt. mbam.sys, an anti-tamper driver from malwarebytes, doesn't occur on my system. That leaves ipnat.sys and secdrv.sys, each of which is capable of causing hangs. I've done a filename change on secdrv.sys (I'm blocked from changing the name of ipnat.sys) and will see if there's any change in boot behaviour.

Thanks, D2ultima. Using the same numbering: (1) While in Safe Mode, I've deinstalled all GPU drivers, cleaned up (Nvidia + Intel) with DDU, and rebooted into Windows normally. Always ends up with black screen, some SSD activity but ultimately ALT/F4 + Enter reboots (so, I conclude Windoze has fully loaded, but I just can't see it.) (2) A 2nd monitor will be tried - I will look out for cables (3) Chess analysis (involves a lot of integer maths). 4 physical cores outperform 8 virtual cores by about 25%,, as the task doesn't parallelise all that well. (4) No, but I shall, as almost a last resort. ANY PARTICULAR TECHNIQUE SUGGESTED? (5) Good idea. I will phone them again and mention this possibility... (6) Could well be, except that about 2 months back I was aware the Nvidia Control Panel was responsive. (7) Understood, thanks. (8, new) Any advantage in my reflashing to the original, Clevo-shipped BIOS? I think not, but you know more than I do.

HELP - EMERGENCY! BLACK SCREEN on P170SM (except in Safe Mode), but I know Win7 is otherwise running fine (except I can't see anything) I don't know where else to ask; this forum (I've lurked here for ages and learned much) has the most knowledgeable experts, especially Maha-Guru Prema-ji . I've a P170SM 32Gb Windows 7 Ultimate and NVIDIA GeForce GTX780M. I didn't have any demanding games, so only the Intel HD Graphics 4600 was being used. The original Clevo-supplied BIOS didn't allow hyperthreading (which is counterproductive for the main use I have for the laptop) to be switched OFF, so, two years ago and using a Rufus-prepared USB stick, I successfully flashed the laptop with the P170SM Prema Mod v2 BIOS. I then switched hyperthreading off and left everything else default. All worked great. The first problem (which I could live with): A few weeks ago I tried to install DOOM 4, which reported the laptop graphics were wholly inadequate. DOOM didn't "see" the GTX780M, even though Win7 Device Manager reported the GTX780M fitted and having 'no problems' (further, DM showed no problems with any device) I then found that right-clicking on the Win7 desktop did NOT offer any NVIDIA options (it did use to) but only Intel 4600 ones. Also, invoking the NVIDIA panel in the Control Panel resulted in an error message like this display is not connected to an NVIDIA device. Trying to fix this relatively minor problem: I guessed some NVIDIA update of past years (they'd all been uneventful, each apparently completing normally) had screwed things up, so, cleaning up using Display Driver Uninstaller (DDU) each time, I tried installing different, earlier NVIDIA drivers, as the internet suggested doing. These didn't fix it. SFC, Win7 diagnostics (got via F8-spamming) and several other utilities reported no errors. De / reinstalling the Intel HD 4600 graphics driver, resetting the BIOS with F3, even disconnecting the system backup battery for 30 seconds (no battery or PSU connected), didn't fix the issue. Guessing - solely on the basis of what others who'd reported a similar problem had discovered, it seemed possible the fault might be in wrong hardware ID numbers within .INF files, though I don't know how it could have happened. Now, the MAJOR PROBLEM comes about: I didn't try to solve this minor (I can live without Doom) issue because the laptop still had limited support from its supplier, whom I contacted a few days ago. A B...I...G mistake... :-( They ran a remote diagnostic utility session, putting them in command of my laptop over the internet. Over an hour they then remotely re-did most of what I'd already done (e.g. with graphics drivers and DDU), uploaded some files (chipset, Intel HD4600 etc. related), did some deinstalls/installs and finally ran a program from tweaking.com which required a reset after it terminated. On rebooting, it got to the usual Windows 7 startup screen - the four coloured objects whirl and fuse as normal - but that is then replaced by a black screen and it stays blank forever. No cursor. All the things they tried (in Safe Mode) to fix this had no effect. They were certain the problem was software only. They then found I'd got a modded BIOS in the P170SM, and so washed their hands of the problem that THEY had caused... And that problem still remains today, though I've torn my hair out trying to fix it (see below). So, I can only use Win7 in Safe Mode, where I can set the resolution to the native 1920x1080, but where I can't do much of my work due to Safe Mode restrictions. I know it's "just" the display that's not working - Win7 is otherwise booting successfully. How am I so sure about that? Because I can hear all the right clicks/tunes and see the HD LED activity finally ceasing, all while the screen stays black. Also, because I can press ("blind") ALT/F4 + <Enter>, and the laptop will exit Win7 and shut down. Finally, because I wrote a little, beeping, batch file to run right at the end of Win7 startup, and this program audibly executes. So everything is working, but I cannot see it. I don't have access to an external monitor. Device Manager shows zero problems and lists both the graphics cards (but status is not available in Safe Mode), with the Intel(R) HD Graphics 4600 shown first. Safe Mode works as I would expect it to (alas, no sound, but I think that's expected in Safe Mode). Trying to fix this MAJOR PROBLEM: What I've already tried to fix it, without success, is: * All the things I'd tried above to solve the minor problem, including no end of deinstalls, DDUs, reinstalls, diagnostics, system battery disconnects, etc. * Restart using last known good configuration and from earlier System Restore points. What I have not tried is to re-flash the BIOS (either reinstalling Prema Mod v2 or reverting to the original, which I've downloaded from the unofficial Clevo archive and hope is OK) as that seems irrelevant. Also, I've not done much with selective startup (in MSCONFIG) because the problem is obviously display-related. Please help me, I'm desperate. I'm very good at following instructions and am software-competent (assembly-language programmer). You will get heartfelt thanks and blessings, expressed both in English and Hindi. Thanks!!