Isass.Exe Point Not Found

riosfernando

riosfernando

Member
Greetings to all.

My desktop system do not start or reboot and it give me this error;

ISASS.EXE- Entry point not found.

"The procedure entry point UeviceIoControl could not be located the dynamic link library KERNEL.32.dll."

OS Window XP

Please help.
 
Please,could you elaborate. This error came after my son use CCleaner and deleted some register information. So i am not sure is a virus. I had avast antivirus installed.
 
AV program doesn't guarantee anything...
All, I need to know is, if the first letter of that missing file is a capital "i", or capital "l" (L)

my son use CCleaner and deleted some register information
Click to expand...
Never a good idea....

Registry cleaners/optimizers are not recommended for several reasons:


  • Registry cleaners are extremely powerful applications that can damage the registry by using aggressive cleaning routines and cause your computer to become unbootable.

    The Windows registry is a central repository (database) for storing configuration data, user settings and machine-dependent settings, and options for the operating system. It contains information and settings for all hardware, software, users, and preferences. Whenever a user makes changes to settings, file associations, system policies, or installed software, the changes are reflected and stored in this repository. The registry is a crucial component because it is where Windows "remembers" all this information, how it works together, how Windows boots the system and what files it uses when it does. The registry is also a vulnerable subsystem, in that relatively small changes done incorrectly can render the system inoperable. For a more detailed explanation, read Understanding The Registry.
  • Not all registry cleaners are created equal. There are a number of them available but they do not all work entirely the same way. Each vendor uses different criteria as to what constitutes a "bad entry". One cleaner may find entries on your system that will not cause problems when removed, another may not find the same entries, and still another may want to remove entries required for a program to work.
  • Not all registry cleaners create a backup of the registry before making changes. If the changes prevent the system from booting up, then there is no backup available to restore it in order to regain functionality. A backup of the registry is essential BEFORE making any changes to the registry.
  • Improperly removing registry entries can hamper malware disinfection and make the removal process more difficult if your computer becomes infected. For example, removing malware related registry entries before the infection is properly identified can contribute to system instability and even make the malware undetectable to removal tools.
  • The usefulness of cleaning the registry is highly overrated and can be dangerous. In most cases, using a cleaner to remove obsolete, invalid, and erroneous entries does not affect system performance but it can result in "unpredictable results".

Unless you have a particular problem that requires a registry edit to correct it, I would suggest you leave the registry alone. Using registry cleaning tools unnecessarily or incorrectly could lead to disastrous effects on your operating system such as preventing it from ever starting again. For routine use, the benefits to your computer are negligible while the potential risks are great.


 
Please, help

The system has been trying to repair itself but as I mentioned apparently my son deleted a registry for reboot the system and the system do not reboot properly.

I think the if I reboot from the DVD then I can reinstall the last registry cleaner (CCleaner allow to save the registry in my documents and I always saved) and that could resolve the issue, the problem is that I do not know if that is possible and when I buy my system it did not come with the XP disks.

Does any when I try to reboot in safe mode the system stop in the registry and stop it there.

Does any one have any idea, please, help
 
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In that case, you're infected.

Let's see, if we can look at your computer booting from an external source.

Please download OTLPE (filesize 120,9 MB)


  • When downloaded double click on OTLPENet.exe and make sure there is a blank CD in your CD drive. This will automatically create a bootable CD.
  • Reboot your system using the boot CD you just created.
    • Note : If you do not know how to set your computer to boot from CD follow the steps HERE
  • Your system should now display a REATOGO-X-PE desktop.
  • Depending on your type of internet connection, you should be able to get online as well so you can access this topic more easily.
  • Double-click on the OTLPE icon.
  • When asked Do you wish to load the remote registry, select Yes
  • When asked Do you wish to load remote user profile(s) for scanning, select Yes
  • Ensure the box Automatically Load All Remaining Users" is checked and press OK
  • OTL should now start.
  • Press Run Scan to start the scan.
  • When finished, the file will be saved in drive C:\OTL.txt
  • Copy this file to your USB drive if you do not have internet connection on this system
  • Please post the contents of the OTL.txt file in your reply.
 
Something strange here. I just used "Windopes" search to hunt for a file named "isass.exe" on my XP machine, and it couldn't find such a file. All it found was a link to this thread. I am now using "Corel Quick Finder"" to try to locate a file which has "isass.exe" in its content. Unfortunately "Quick finder" while able to search files content for some particular thing, is rather slow.

Re using Registry Repair programs, I do it periodically. PITA to do though, cause I use "Registry First Aid", which is the best one of that kind I have found. It finds an awfull lot of errors even after a fresh install. Of course I don't let it do automatic repairs, rather I go through the hundreds of errors, (typically around 700 after a fresh install of all my software), one at a time by hand, and select those that I can figure out which of the several repair options given is the right one to use.
 
I just used "Windopes" search to hunt for a file named "isass.exe" on my XP machine
Click to expand...
No wonder, since it's a part of a Sasser worm.

Re using Registry Repair programs, I do it periodically.
Click to expand...
You can do whatever you want on your computer, but do not encourage others to do the same.
 
still needs help

he syste can not reboot ftom the CD and I change the BIOS however I just can not go to this; step

Now choose Boot Sequence and then arrance 1 to CD-Rom by pressing - + and press space to enable it
Press ESC and choose save settings and exit

Dell - Dimension 8100
Intel Pentium 4 Processor: 1.30 Ghz
LEVEL 2 Cache: 256 KB Integrated
System Time ...................
System Date ...................
Primary Drive 0 ...............
Primary Drive 1 ...............
Secondary Drive 0 .............
Secondary Drive 1 .............

Boot Sequence .................
* 1. IDE CD-ROM Device
* 2. Hard-Disk Drive C:

SPACE to enable/disable | +,- to move down/up
System Memory .................
AGP Aperture ..................
CPU Information ...............
 
When I go the the black screen where you choose start in safe mode, I choose the last time that the system worked and them it try to start the system from the CD, but it gave me this message "Windows can not start because the following file is missing or corrupt. WINDOWS\system32\config\SYSTEM
Then select "r" at the first screen to start repair... but it bring me back to the black screen again.
 
"Windows can not start because the following file is missing or corrupt. WINDOWS\system32\config\SYSTEM
Click to expand...
The above error indicates system hive being missing on corrupted.
It should be fixable, but you need to manage to boot from a CD.

Your boot order:
Boot Sequence .................
* 1. IDE CD-ROM Device
* 2. Hard-Disk Drive C:
Click to expand...
is fine.
You don't have to change anything.

However, now we have two issues.
Sasser worm and system hive messed up.
I'm not sure, if they're connected, or not, but we'll find out.

Instead of my previous instructions, do this....

We'll have to replace the registry hives with a set of those present in the C:\System Volume Information folder, (if Restore Points are available).

Be very careful with following next set of steps:

We need to create a batch file and save it into a flash drive to move information from the sick computer to a working computer. This batch is to list all directories in C:\system volume information, which is useful for finding the backed up registry!.

Important note: Ensure that you Save it on the flash drive. Do NOT save this file on the working computer. You can accidentally run the file in the computer and damage its registry. This file will be ran in the non working computer after following the next set of instructions.

Using your clean working computer do the following:

1. Go to Start -> Run, and type notepad into the box.
2. Click OK.
3. Copy and paste the following code into Notepad:

Code: 
Ren C:\windows\system32\config\system system.123
Dir "C:\System Volume Information" /s >C:\log.txt
Ren C:\windows\system32\config\system.123 system
Del %0

4. Go to File -> Save As then enter: ren.bat (save it as all files (*.*))
5. Then.. Save it on the flash drive. Do NOT save this file on the working computer.
6. After that insert the flash drive into the infected computer.

NOW...
On good computer...
Please download OTLPE (filesize 120,9 MB)


  • When downloaded double click on OTLPENet.exe and make sure there is a blank CD in your CD drive. This will automatically create a bootable CD.
  • Reboot your system using the boot CD you just created.
  • Note : If you do not know how to set your computer to boot from CD follow the steps here
  • Your system should now display a REATOGO-X-PE desktop.



7. Once booted with OTLPE CD, go to Start My Computer then go to your flash drive and copy the batch file to the desktop then double click it to run it.
8. Then go to C:\log.txt copy and paste it back here as a reply to this post.

Note: You may have to copy and paste the log into the flash drive so you can post it back here.
 
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Help

I did everything the problem is that the system can not reboot. Continue to go the black screen (the black scree is where you choose how you want to reboot, safe, normally or at the point of the last time where it worked correctly)
and when I try to reboot or the system freeze or come back to the black screen.

I will not reboot from the cd drive even is trying.
 
Well with respect of Registry Repair Programs, a lady friend of mine complained about her laptop running very slowly, and asked if I could help. Started off by running "Windopes" clean manager, to get rid of 3 Gig worth of junk off her "C" drive, Then ran MS defrag, and found it badly fragmented, then ran "Registry First Aid", - You ready for this ? 1407 registry errors !! It's a WONDER the thing ran at all !! Since it will take days to go through all of them one at a time by hand, I am going to teach her how to do it.

And with respect of this guys problem, Sir do you have another HDD with "Windoze" on it ? Or do you have a friend with a computer that is running the same version of "Windoze" that you are trying to fix on your machine ?
 
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The laptop that I have (the good one) in Window Vista but the one that is not working is Window XP, Do you recommend try to reboot the laptop.
 
What you need is a working XP desktop, that you can stick the HDD from your defective laptop into, then recopy those files that are damaged on your HDD from the HDD in the Desktop. To do that you will probably need an adapter to hook your HDD up to the desktop. Once done, you boot from the desktop's undamaged drive and copy those files that are damaged on your HDD from the desktop's HDD, or alternately format your drive and start over.
 
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