How do I fix illegal
operations:
Issue:
How do I fix Illegal Operations?
Additional Information:
An Illegal Operation is an operation
requested to be performed by either the Operating System or CPU that is
not understood and therefore is Illegal.
Cause:
Illegal Operations can be caused by
several different factors. The following is a listing of the more
commonly known reasons for getting Illegal Operations.
- TSR's or Third party programs causing
memory conflictions or other types of conflictions with the program or
programs attempting to be run.
- Data not being read properly from
source. Running a program or game with a dirty CD can cause the CD to
be read improperly causing Illegal Operations. Floppy diskettes which
may contain errors can cause errors.
- Installing a program or game on a
hard disk drive that has errors or is highly fragmented.
- Corrupt files.
- Memory managers.
- Bad, incorrect or not the latest
video drivers.
- Computer Virus.
- Added hardware
- Error in program coding
- Corruption or problem within Windows.
- Bad Memory, invalid bits or
physically bad memory.
Solution:
TSR's or Third party
programs:
TSR's or Third party programs running
in the background are one of the more commonly found reasons for
Illegal Operations. If you are receiving a Illegal Operation when
attempting to run a game or program it is recommend that you
temporarily remove or disable programs running and TSR's running in
the background insuring that these programs are not causing your
issues.
If after removing these programs you
run the program or game and no longer receive the Illegal Operations
it is recommend that you reboot the computer and disable or End Task
each program or TSR one at a time to attempt to determine which
program is causing the Illegal Operation.
Data not being read
properly from source:
When running a program or game from a
CD you receive an Illegal Operation verify that the CD is clean.
If you are running a game from a
floppy diskette or other floppy media such as a zip diskette or LS120
verify that the diskette does not have physical errors with it by
running a scandisk or disk drive utility included with the drive.
Installing a program
or game on a hard disk drive that has errors or is highly fragmented:
When installing a program or game onto
a hard disk drive it is recommended if you receive errors after
installing that program or game that you attempt to uninstall that
program or game run a scandisk and then a defrag and then attempt to
install the program or game again.
If errors exist on the hard disk drive
these will cause the program or game to run improperly and can cause
Illegal Operations.
Corrupt files:
Corrupt, bad or missing files can
cause Illegal Operations. It is recommended that you attempt to
uninstall and or reinstall the program causing the Illegal Operation
to verify that any corrupt, bad or missing files are replaced or
repaired during the reinstallation.
Memory managers:
If you are running a memory manager
that is used to obtain more memory or handle the computer memory in
replace of Windows it is recommended you temporarily disable or
uninstall this program to verify it is not the memory manager causing
the Illegal Operations.
Bad, incorrect or not
the latest video drivers:
Bad, incorrect or not the latest video
drivers may cause Illegal Operations when performing such tasks as
moving the mouse or dragging data from one source to another as high
demands are placed onto the video card. Attempt to decrease the video
settings to 640 x 480, 256 colors to verify if the program or game
being run is having errors because of the current video settings.
If after attempting to adjust the
video settings you still encounter the same issue verify the computer
is utilizing the latest video card drivers.
Computer Virus:
Because computer viruses are loaded
into memory, change the data of program files when infecting a
computer ensure that a virus protection utility is installed on the
computer and that you have the latest Virus Definition.
Added hardware:
If added hardware has been recently
installed onto the computer it is likely that either the hardware is
conflicting with other hardware devices on the computer or that the
drivers used to install that hardware is causing issues with other
hardware or software installed on the computer.
It is recommended if added hardware
has recently been added to the computer temporarily remove that added
hardware and the software associated with it to ensure it is not
causing your issues.
Error in program
coding:
If you are receiving Illegal
Operations only when running a particular program verify that program
is compatible with the Version of Windows you are running and ensure
no available patches or software are available that may fix errors
made during the development stages.
Corruption or problem
within Windows:
Because Windows controls the memory
operations as well as the file structure and association it is
possible for Windows or files associated with Windows to become
corrupted causing Illegal Operations or other errors. It is
recommended you reinstall Windows if you are experiencing Illegal
Operations in Windows or more then one program trying to be run on the
computer.
Bad Memory, invalid
bits or physically bad memory:
It is possible that bad memory can
cause Illegal Operations. If you have recently added memory to the
computer it is recommended that it first be removed to verify that you
are not experiencing conflictions with the recently installed memory.
If no memory has been recently added
to the computer it is recommended you follow all other steps found on
this page before replacing the memory within the computer.
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