Windows 7 fails to go into safe mode. Stuck at classpnp.sys

Hi, I wanted to go into safe mode on windows 7 but it kept stopping at classpnp.sys . After reading a few threads I read about using Msconfig and checking the safe mode option under "Boot". It still keeps staying at classpnp.sys and when I hit F8 and hit "Last Known Good Configuration (advanced)" it seems to be able to get trough and it says it's actually loading up safe mode but then it changes to a black screen and does not change from that screen. I would appreciate and information you guys have that could solve this problem. If any of you know a command I could type in cmd to bring up the msconfig while in repair mode I could fix it because all I need to do is untick "Safe mode on startup"

This happened to me because I tried to install Fallout 3 too. I tried doing the c:\windows\system32\drivers\classpnp.sys to classpnp.old but then it just stops at the one before and goes on to say windows is starting in safe mode but then it shuts off and restarts.
Glad to hear tat Fallout 3 is still being played.
Firstly there are a few things that I have discovered. Classpnp.sys causes a few problems with the system. As I don't know what your system or brand of computer you are using, I'm not sure exactly what advice to give. However it should work a little something like this. When you start your computer you will see the brand name of the company who built the system (ie. Acer, HP, Compaq etc) Press either alt + F10 or alt + F11.
This will bring you to a recovery type menu. From here you can do a system restore you will loose any un-backed up data. This trick will restore your systems factory defaults systems. I have not been able to try this myself yet.
Also depending on your what OS you are using you could try and and get a hold of either the Vista or Windows 7 recovery disks.
You can download them from here:
http://neosmart.net/blog/2008/windows-vista-recovery-disc-download/
You will need a burning software as recovery disks need to be on disk so you can boot it up during windows start up.
Use this software: ImgBurn
http://www.imgburn.com/
Its free and is very effective (I can see this having more use with other iso files of mine)
Again I have been unable to try this myself.
And the last option short of formatting the drive is to use another piece of software called Ubuntu 9.10 Desktop.
This is freeware that needs to be downloaded (http://www.ubuntu.com/) and then burnt on to a disk using the ImgBurn mentioned above.
Put the disk into the drive and but it up during windows start up.
You also need to download a replacement classpnp.sys file. You get this from http://www.hotfile123.com/index.php?q=classpnp+sys
(I also haven't tested this file yet but there other options on the site)
While using Ubuntu find the classpnp.sys (C:\windows\system32\drivers\classpnp.sys) rename this to classpnp.bak
Copy the recently downloaded version of the classpnp.sys to replace the old one.
Exit and restart. The computer may lag a bit but should eventually boot into safe mode.
Sadly I haven't been able to try this yet either.
Although none of this helps with getting fallout 3 to install any easier.
I will post with my progress and with what works in the near future. Hope any else can do the same.
Good luck.

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When you see answers and helpful posts, please click Vote As Helpful, Propose As Answer, and/or Mark As Answer.
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Hello stevelaura,
The problem is with your video driver if the problem exists only after booting into Windows.
1. Boot into safe mode
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3. Launch Device manager and expand the Display Adapter section.
4. Right click on your display driver and tell it to uninstall
5. Press the Win key on your keyboard then the right arrow twice. Then the letter R.
Once the system reboots allow it to go into Windows as normal. Windows will automatically attempt to install a new video card driver for the system.
If that doesn't help resolve the issue please respond and include the make and model of the system you are using.
If I have helped you in any way click the Kudos button to say Thanks.
The community works together, click Accept as Solution on the post that solves your issue for other members of the community to benefit from the solution.
- Friendship is magical.

Can't boot into safe mode or prompt login window, need help.

Hello all,
This is cross-posted from the installations and set-up list.
Can anyone suggest a remedy for what's ailing this powerbook. its a g4 powerbook, i don't have much more info other than that. all indications are that it is running 10.2.6, although i was told that it had been updated to 10.2.8, its possible that it was updated only to 10.2.6. following the update, you get to the apple and spinning pinwheel screen and it will not proceed. literally, the pinwheel will spin for 24 hours+.
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Why is it still so hard to get into safe mode?

One of the worst features in Windows 8 is the many, many steps it takes to boot into safe mode... and it doesn't always get you there. And sadly, Microsoft has brought that into the Windows 10 preview.
Let's be real for a second. Safe mode is a valuable tool for it techs, and can be helpful to the home user. Getting there is a friggin' nightmare in Windows 8, and it's no easier in windows 10. The UEFI bios and boot manager doesn't help either.
Bring back a functioning F8 key, will ya?
On another note, why the hell can't you boot from a linux-based cd and find the windows 8/10 based OS. Microsoft's virus removal tools are useless if you can't boot into Windows... and "refreshing" the drive also ONLY works if you can load the
Operating system.Pulling the hard-drive to scan it for virus removal should not be necessary, but it seems to be with Windows 8, 8.1 and 10.

Ran across this article after putting the 10 Tech Preview on my computer last week. Started off with build 9741 and now have 9879 and I just want to totally agree with the poster that Microsoft seems to have forgotten what safe mode is used for, mostly troubleshooting
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But, even with 7, I've had endless hours wasted trying to fix the counterintuitive way that Microsoft seems to think (or not think) regarding these sort of issues. I'll gladly give up a couple (or even 30) seconds to have the option to boot into safe mode.
I've fought with Microsoft over and over again about the way they keep trying to automate troubleshooting even when there are very simple manual fixes. Sometimes it seems like they want to just keep users from having the control we want over how our system
works. And it this case it's just plain stupid that you can't choose to boot directly to safe mode by default from a preloading boot menu. Win 7 had terrible problems with "Bootmgr is missing" after even the simplest of issues such as adding files
to a USB or just a bad defrag or user mistake. I spent hours pulling my hair out after such issues and eventually got myself into a hole because of the way Microsoft looked at the issue. 99% of the time I could have fixed my issue by being able to do a repair
install from startup and it never made sense that you could only do an in place or "upgrade" install as they started calling it, If you can already boot into Windows. Lots of good that does when you can't get Windows to boot in the first place. And
so far the Startup repair in Tech preview is just as useless as in Win 7. Except now it's even harder to get to. I played with it a bit to test it and just a simple thing like moving the bootmgr one file down in the directory or just adding 1 small file out
of place was enough to make tech preview unbootable as well when using the older MBR setups. The new startup repair hasn't fixed it once. I don't know what the refresh really does as it doesnt work either. Gives a vague error with no link to a log and no other
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problems could have been fixed by simply allowing us to boot from the install media to re-install without loosing data. I'm glad to see that at least for now you can do a repair install from boot in the current version of 10 Tech Prev. Please keep that for
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missing Vredist C++ files coming up missing after trying to get DirectX 10 to work. There is a stupid loophole there that Direct X will make you delete allx86 and x64 C++ runtimes that it doesn't like, in this case it wouldnt install with the
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Intel Mini will only boot into safe mode - hangs on ANY Mac OS volume

I have an Intel Mac Mini... the core2duo 1.83GHz or whatever.
I acquired it from it's previous owner, as it was "broken".
He could not get it to run an install disc.
It will not boot any of the Mac OS install media (DVD or CD - 10.4, 10.5, 10.6).
It will not boot/install a Linux disc (I haven't tried, but that's what I was told).
It WILL boot/install Windows !?!?
So... anyway, I removed the HDD, and installed OS 10.6 Leopard on it (FW Target mode installs kept failing at the end - regular retail DVD). I then reinstalled the HDD back into the machine.
The system keeps hanging at the same point it would when trying to boot an install DVD - after the screen turns blue, it goes back to the gray screen, then immediately freezes.
However, I eventually discovered that it WILL boot into safe mode !
Everyone kept saying it's the logic board failure, but if it boots into safe mode, can that be true ? It doesn't seem to me that it would be hardware based in that case - unless it's just a specific component, like the Airport module or something.
The last line displayed in Verbose mode when it hangs is:
"athset_txchainmask[5124] sc->sc.config.txchainmask 5 mask 5"
It also says something about the Airport just before that.
I tried removing the Airport module and it still hangs.
I also tried different RAM, with the same results.
I ran the 10.6.2 combo update in Safe Mode. It still hangs. Haven't tried 10.6.3 yet, though I do have it downloaded and ready to install.
This thing is driving me crazy. Please tell me there's a fix, OTHER than replacing the logic board ?!?! It just doesn't seem like it should be so complicated considering that it runs in safe mode.
It's rare I can't figure out a Mac problem - please help !
Message was edited by: maxtechsystems

Very strange, and getting stranger !
Ok... so, from safe boot mode, I installed Windows XP Pro using the boot camp assistant.
Everything installed perfectly. I started up from Windows, and put in the Mac Mini recovery disc, in order to load the drivers. The Boot Camp software started with Auto Run, and I clicked through to install everything. The drivers start loading...Windows reacts positively, with the system tray announcing "new hardware installed" every 30 seconds or so. Airport/WiFi IS working (in Windows), as it detected my router/network...this is where it gets F'ed up - when the installer gets through with the drivers, and installs the boot camp software for Windows - the system reboots, goes through the usual Windows startup...the desktop background appears, but no icons or start menu - then it reboots again...same thing, again, over and over in a loop.
Went back into OS X (safe boot mode). Installed reEFIt (a bootloader utility), to see if maybe I can bypass the Mac OS/Boot Camp bootloader. No luck. Install worked, but still had the same issues.
For the heck of it, I try installing Linux Mint 8. The live CD starts up OK, but only as far as the boot menu. I tried the installer first - after the splash screen, it hangs on a plain gray screen (w/o the normal linux installer language selection menu - just solid grey).
I tried running the live CD w/o the installer - the actual OS. Same thing - after the splash screen, it hangs, only it's a black screen this time. If I use verbose mode, it still seems to hang on the WiFi card.
Here's the strangest thing yet - Ok, remember, it wouldn't boot normally into ANY Mac OS volume - including the installer DVDs - only in safe boot mode...
So, I try the "hackintosh" IPC osX86 10.5.6 DVD - it boots into the installer with NO problem, WITHOUT safe boot mode ! I tried installing it unsuccessfully. I forget now which options I choose, if any, though I may try it again later and pretend it's just a non-apple PC with the same specs as the Mini (or try just the "base system", and the bootloader - then run the official Apple updates)
This last thing really makes me think it has something to do with the EFI/bios - however, I've only been able to find info on how to update it, not replace or restore it - and it's only from a working install, not forced from a flash drive or CD (plus when I do try the installer from safe boot mode, it says it's current and unneeded).
I still haven't changed the hard drive. After almost successfully installing Windows, I made the assumption the -hardware- was OK, and reassembled everything.
Currently, I'm trying a direct installation of Windows XP Pro SP2 with which I'll try installing the drivers WITHOUT the boot camp software, to see if the WiFi (Airport card) and everything else is indeed working OK (remember too that the system passed ALL the ASD 3S116 tests).
So anyway, that's the current status. Any new ideas anyone ?
Thanks.
Message was edited by: maxtechsystems

Cannot get into Safe Mode

Fairly new Toshiba Satellite p875-s7102 (purchased in Feb but rarely used). Laptop has not been working for a week, been trying everything. Now I cannot even get into Safe Mode. Almost every link I read shows how once you get to the Windows Start page but I can't even get to that. I have beat the hell out of F8 button to no luck. I have had every issue trying to fix this lap- error messages, blue screen, Disk at 100% usage, Check disc at start stopping at 40% scan, you name it it's happened. Any suggestions other than throwing this thing against the wall???

Satellite P875-S7102
I tried to follow the directions here http://support.toshiba.com/support/viewContentDetail?contentId=2737864 to restore to factory settings. I press 0 (zero).....
In Windows 8 things are different. This part was intended to help (but doesn't help much).
For laptops equipped with Windows 8, "Reset" returns your computer to its out-of-box, factory default conditions (removes your personal files and apps as well reset all settings to defaults) similar to a “System Recovery.” Refer to the How To: Understanding System Restore, Refresh, Reset, and, Recovery options in Windows 8 + Video knowledge base article for complete information.
In case Windows does not boot, you should be able to enter the recovery environment, which in Windows 8.x looks like the picture below.
From Troubleshoot you can go to System Restore, Safe Mode, Startup repair ("Automatic Repair"), a command prompt, the BIOS/UEFI, or even restore the hard disk to its original out-of-the-box contents from the recovery partition..
According to Microsoft, trying and failing to boot several times will eventually take you to the recovery environment instead. According to Toshiba, you can also get there by pressing F2 or the zero key on powering up.
If you have completely shut down, Toshiba says you can get there using F12 to reach the UEFI boot menu and then selecting HDD Recovery. One might expect that to take you to Toshiba's recovery back to factory-new, but it actually leads to the recovery environment above.
Please try these out many, many times and let us know what happens.
Do you have important files to rescue?
Have you upgraded to Windows 8.1?
-Jerry

Login screen comes up repeatedly, booting into safe mode by default

Good Morning,
I have an iMac (Lion 10.8) that is having a lot of trouble. I manage an Elementary School's IT fleet. At the end of last year, the computer was booting into Safe Mode by default. Once the system came up, the teacher could use it - but it took so long to boot that she chose not to. The teacher left the school, and I was planning to just format it and reimage. Here is what I have happening.
Boots into safe mode on it's own
Once it's done booting, the login screen shows up - but entering any credentials just gets a grey screen, and the login screen comes right back. Even root. Which means I can't get logged into the computer at all.
Recovery mode will not allow me to erase the drive, says failed and not able to access the drive.
Target mode will also not allow me to erase the drive, nor will it allow me to push over an image. Scanning the drive failed, busy.
Disk repair says unable to repair disk - please format.
These are the things I have tried.
Reset PRAM (three times over the course of troubleshooting)
Replaced the RAM completely
Unplugged 15 seconds trick
Accessing via Target mode - Drive is greyed out, but shows up
Ran FSCK manually, and it completed
Tried to do a netinstall, but the disk does not show up in netboot as an option.
I thought maybe the drive was bad, but considering that it will boot into safe mode eventually (although you can't login), and FSCK completed successfully - I'm just not sure! I just thought I'd pick your brains. I'm usually a Windows \ Linux Administrator, so this Apple business is new to me I'm learning! Although I find them frustrating. Any help would be greatly appreciated!
Thank you

I thought maybe the drive was bad, but considering that it will boot into safe mode eventually (although you can't login),
Some part of the disk may be bad while others are good. i/o could be trying multiple times and eventually succeeding.
Ran FSCK manually, and it completed
You run FSCK in single user mode? This is very surprising. FSCK verifies the filesystem is in order. Actual data blocks could be bad. Would be a surprise if no file system blocks were not also bad.
Except for this fact, it seems like a hd problem. Intermediate problem. Heat problem, etc.
Time to try a different hd. See if that works. Could be some other hardware problem. Try external drive/flash drive, etc.
Mac OS X is BSD Unix.

Will not boot normally, but will boot into Safe Mode... what now?

Hey y'all, I've got an iBook G4—purchased in 2003—that's had its hard drive replaced (due to the OE one failing) and that's on its second battery (which will need replacing soon unless I can't get this resolved, then it's new computer time... ugh).
Last night I left it open and on and probably had a couple of sites open in tabs in Safari, as well as Mail and iChat open (Preview might've been open, too).
When I went back to it this morning it wouldn't come off the black screen (I don't have it set to sleep), and I thought it was because it's dry here and I must've discharged into it through the trackpad (though I've always felt it before), which freezes it, a problem that's happened before and that's normally resolved with a restart. Confirmed it was, indeed, frozen by turning the number lock on and off (which turns the light for it at the top of the keyboard on and off).
Powered it down by holding the power button. On restart it wouldn't go beyond the black screen. Tried it a couple of times, same problem. Things were pretty warm, so I let it sit for a while. Went back to it and it would freeze on the gray apple screen with the progress "gear" freezing after a few seconds of whirling about. Managed to get to the UN/PW screen once, but it froze after entering my UN and PW. Now it freezes on the apple/gear screen every time.
I used the Hardware Test CD to check things and all the hardware tests showed up fine. Booted it into Safe Mode and ran Cocktail. Rebooted, no joy.
Booted again into Safe Mode and backed it up onto an external HDD using CCC. I had done a clone a few weeks ago, but I wanted my most recent emails, etc.
Used Disk Utility to repair permissions. No change. Attempted to boot from my cloned disk image. No go. Repaired some permissions on that drive and tried again. No joy.
The thing "works" in Safe Mode, but I cannot get it to boot into things normally.
Seeing as it was online, is it possible that I picked up some corrupted font that's causing these problems? Got that idea from other stuff I've read online regarding iBook G4 start-up issues and this: http://support.apple.com/kb/HT1564?viewlocale=en_US
Any other ideas?

Gents, truly, thank you.
In safe mode I couldn't disable the Airport card as it was already off and the hardware was "not found". No biggy. I simply pulled it. Booted up normally without a problem several times.
I swapped in a known-good Airport card from another iBook G4 and put this one's in that iBook. That computer wouldn't start and this one started up no problem (and I'm posting from it).
Weird that it would go bad like that, but it did. It's nice to know what the problem is and that the fix is easy. I'm glad I didn't go through any restore or wipe and install procedures.
So, again... THANK YOU!

Hard drive won't boot into safe mode

My mid 2010 Macbook Pro has suddenly decided to not boot up after installing BitDefender and running a scan.
I installed it on a whim when I saw minor malware that hijacked Safari, and decided to run a scan. While I was working on Photoshop, the scan must have finished because all of my windows disappeared and I was left with my desktop and the spinning gray loading at the bottom of my screen. I waited 20 minutes, realized it wasn't going anywhere and force shut down the Macbook by power button.
Now, I cannot successfully get it past the grey apple loading screen. Attempting to boot into safe mode still leaves it at the same screen. Tried to reset the PRAM, still can't get past the loading screen. I still have my OS disk, however it is Snow Leopard and my current is Mavericks and I'm unsure if it is a wise idea.
15 inch mid 2010 Macbook Pro running OS X Mavericks, how dead in the water am I and how much would this cost me to "fix"?

Use the original Snow Leopard installation disk and start the MBP as if you were going to reinstall the OSX. Early in the process you should see a menu bar on the top of the display. Click on UTILITIES and from the dropdown menu select Disk Utility. Run Disk Utility>First Aid, Verify and Repair. If it is not successful, the HDD will have to be replaced.
Ciao.

Won't boot into safe mode

My 2012 iMac 27" was randomly rebooting itself, while in Sleep. I assumed this was due to the cheap 32 GB memory I bought, but before I could change it back to the original memory, to test, the Mac booted into Safe Mode (I assume - a progress bar showing at the bottom of the boot screen, below the Apple logo), and did not get further than a half the way, and then shut down. I swapped the memory to the original 8GB. I tried booting again, no buttons held down, as then it wouldn't get further than a quarter of the way. Further attempts to boot do not work, even when holding down Option to choose the boot disk, pressing Shift for Safe Mode, or Option-S for Single User Mode. I assume it's trying to boot in Safe Mode, but failing?
I also tried using a good Mac with the bad Mac as the Target Disk boot mode - the good Mac does not see the bad Mac...
I have an external DVD drive, but that isn't an option as I can't go into boot drive select mode. What are my options, apart from sending the iMac back?

Booting into the Recovery HD should allow you to effect repairs - that's the point of it, so it's a bit concerning that it won't allow you to. The Recovery HD is a partition on the internal drive that should allow you to effect repairs to the Macintosh HD, albeit part of the same physical disk.
I'm no expert, but I'd be concerned that the hard disk is on the way out. Do you have backup of everything - Time Machine or a bootable clone, perhaps?
Maybe have another try with Command+r. If it fails I'm not sure what would be the best next step - it depends if you have a full and up-to-date backup of your disk so that you can restore.
One of the options of the Recovery HD is to allow you to re-install the OS, which won't delete your data.
The more extreme step would be Internet Recovery which would involve erasing everything and re-installing via the internet.
Worth reading this carefully before proceeding: http://support.apple.com/kb/HT4718
Disk Warrior from Alsoft (not cheap) is another possibility for recovering damaged disks, although it's not a guaranteed solution.

ITunes causes VAIO laptops to go into Safe mode

Hi, when I open iTunes on my Sony Vaio laptop (Windows 7) everything on the screen changes appears to be in Safe mode. Then it acts like its syncing with my iPod Touch but nothing gets downloaded - some music got removed from my Touch.
Any help would be appreciated.
Thank you,
- M

I have no problems, thankfully. I have Firefox on another computer and somehow FF went into "safe mode." I noticed that it ran faster, with no affect on what I do with the browser, which is nothing fancy. Therefore, I decided to put FF on this computer into "safe mode," too.
I had to ask how to do it because the instructions are not evident where mention of using it to fix problems occurs under 'help.' Why talk about using something without telling how to get to it. Very frustrating! Had it been done, I would not have had to bother folks here. Perhaps bring this omission to the attention of the "powers that be."

Windows 7 fails to go into safe mode. Stuck at classpnp.sys

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