Unfortunately, starting with Windows Vista,you can see that the system crashes quite often, and then even in safe mode, the system hangs after booting (CLASSPNP.SYS is the last component on which to stop). Let's see what it can be connected with, and how to restore the working capacity of Windows.
As for the reasons for the appearance of suchunfavorable situation, they can be quite a lot. Usually, even when rebooting using the F8 (Safe Mode) key, the system seems to be behaving normally. But then for some reason, a certain component, in our case CLASSPNP.SYS, is not loaded in safe mode.
In general, such a phenomenon can occur, say,when a computer system is banal with a virus, a violation of integrity or due to the absence of the CLASSPNP.SYS file itself, as well as in the event of conflicts with third-party applications or during system failures in the system loader.
In general, such failures are most characteristic oftwo system libraries - CRCDISK.SYS and CLASSPNP.SYS. The first is a hard disk check tool, the second is responsible for the operation mode of the SCSI hard drive. Violations in their work are simply catastrophic. These components are located in the system drivers folder in the System32 directory of the Windows root directory. It is clear that their damage entails negative consequences. In some cases, it is impossible to even repair Windows. But first things first.
So, we have a situation when the system libraryCLASSPNP.SYS is not loaded in safe mode. Signs of such a failure can be a complete freeze on the download of this component. And in some cases - even the emergence of BSoD (what is commonly called the blue screen of death).
For the reasons stated above, we willmake a decision to eliminate the consequences of such a failure. To begin, consider the question of the rollback of the system, presumably based on the fact that the file is still present on the hard drive and is not damaged (the cause of the failure may also lie in another).
When, for example, Windows 7 hangs on loadingCLASSPNP.SYS, you can try to reuse the bootloader using the F8 key, but only after entering the menu you should choose not the safe mode, but the loading of the last successful configuration.
In principle, if the file itself is not damaged, that isthe reason is absolutely not connected with this, quite often the restoration takes place without any problems. However, not always. It also happens that when you try to rollback, when the recovery parameters window appears, the system enters such an endless search. In such a state, it can hang for a very long period of time. What to do in this case? Let's try to use several universal means.
Если наблюдается ситуация, когда загрузка Windows 7 stops on CLASSPNP.SYS, it is very likely that a virus or a virus has infected your computer or laptop. Actually, it also needs to be removed or isolated. But how to do this, because the system does not boot, but a regular antivirus or some portable utility can not be launched?
Here we come to the aid of universal andPerhaps the most effective means of checking, which are commonly called recovery disks (Rescue Disk). True, the disc will have to be recorded on a different terminal, but its subsequent use to eliminate all sorts of threats in our case is the only possible and correct solution.
The verification utility itself starts before the start.Boot the operating system (in the BIOS you will definitely need to specify the CD / DVD-ROM as the first Boot device). After launch, the program will prompt the user to select the mode of operation (download a graphical interface, use some language, produce processes from the command line, etc.). Choosing a graphical interface is the most convenient. Now it only remains to start the scanning process (set by default or with the selection of objects and disk partitions manually). Even if the virus is embedded deep in the operational or system memory, there is no doubt that it will be detected and completely isolated or deleted.
Again, what if the viruses are not detectedwere, and again the component stops loading, or the system reboots on CLASSPNP.SYS? This situation may indicate that the file is simply damaged or missing in the default location. Some recommend using it to replace the original library. There are two options: download the file from the official resource from another terminal or try to copy it from the installation disk, which we will need in any case (even when copying the desired object from a USB device).
Consider the second method, since italmost completely identical to the first. Except for the fact that copying will be made, for example, not from a flash drive, but from an optical medium with an installation distribution kit.
As already understood, boot from disk.After the installer's graphical interface appears on the screen, we do not turn on the installation, but use the command line (it is called by the Shift + F10 combination). After that, using the copy command “drive letter or flash drive”: “path to the file” c: windowssystem32drivers move the file to the right place (the command is entered without quotes). After that, you can try to reboot the system and see what will happen when you boot.
Separately, you should pay attention to the copiedfile. Its version should correspond to the capacity of the system, because if you place a file designed for a 64-bit version into a 32-bit Windows 7, then nothing will work.
If this does not help, and the situation repeats.again and again (CLASSPNP.SYS is not loaded in safe mode or in any other), the problem may be in the damage of the Windows bootloader and the boot sector. There will have to apply extreme measures. Again, this will require a Windows boot disk or some Live CD. As in the previous version, you need to call the command line, then first set the standard disk check by entering the sequence chkdsk c: / f / r.
After that, you can proceed directly to the restoration of the bootloader. To do this, you need to enter two main commands in the console:
After that, of course, you can tryrestart the system, but it is better to rewrite the entire boot sector for complete confidence. To do this, use the command Bootrec.exe / RebuildBcd. Now the download should happen in any mode.
Finally, pay attention to one more moment.If the system has booted at least once after applying the first methods, it is possible that conflicts arise between some kind of software. User feedback suggests that, oddly enough, very often this problem is caused by the Daemon Tools package. It is argued that changing it to the lite version of the Lite fixes the problem.
However, when the system is loaded, you can use the DLL Suite utility, which will allow you to automatically restore all vital system libraries, including CLASSPNP.SYS.
Here, in fact, all about the reasons for the appearancefailures when CLASSPNP.SYS is not loaded in safe mode, and methods to eliminate the negative effects of such situations. If we talk about which method to choose, it seems to be best to use the boot loader repair immediately, and then use the DLL Suite program. Such a path may seem devious to many, but in most cases it is this combination that helps. Of course, you can not discount the simplest solutions, because the problem can have quickly eliminated causes. But in general, special problems should arise. Yes, one more, last recommendation: always have on hand some antivirus and boot disk, otherwise everything can happen.
