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Description |
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A device driver has a bug, which freed memory that is still in use.
Some older versions of Windows may show the description as "WORKER_INVALID". This is a fatal Windows error, typically called a Stop message, Bug Check, or more commonly the Blue Screen of Death (BSoD). The system is in a forced reboot state. Any unsaved work is likely lost.
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Sample Screen |
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A problem has been detected and Windows has been shut down to prevent damage to your computer.
If Parameter1 == 0, an executive worker item was found in memory which
must not contain such items. Usually this is memory being freed. This
is usually caused by a device driver that has not cleaned up properly
before freeing memory.
If Parameter1 == 1, an attempt was made to queue an executive worker item
with a usermode execution routine. Technical Information:
*** STOP: 0x000000E4
Beginning dump of physical memory
Physical memory dump complete.
Contact your system administrator or technical support group for further
assistance. |
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Text may appear differently depending on where the error occurs.
Additional technical information (hex values) specific to a machine are not shown. |
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Key Facts |
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Full Title |
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If Parameter1 == 0, an executive worker item was found in memory which
must not contain such items. Usually this is memory being freed. This
is usually caused by a device driver that has not cleaned up properly
before freeing memory.
If Parameter1 == 1, an attempt was made to queue an executive worker item
with a usermode execution routine.
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Stop Code |
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0x000000E4
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Type |
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Fatal
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Windows |
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2000, XP, Vista, 2008, 7, 8
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Vendor |
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Microsoft Corporation |
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Solutions and Fixes |
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Check if you are using the latest hardware drivers, especially the chipset and video drivers. Older drivers are a common contributor to BSoD issues.
You can use a product like Driver Genius or Radar Sync to verify you have the latest drivers and help keep all your drivers up-to-date. If you're comfortable with driver installations, you can individually find and install current drivers.
A some of the most popular driver download sites:
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FaultWire Staff
Posted: 5-Oct-2008 |
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Install the latest Windows software updates. Don't forget to check for non-critical updates too!
To manually get updates, open Internet Explorer (you can't use a non-Microsoft browser for updates).
For IE 8 and later: Click on Safety, then Windows Update. Follow the instructions.
For IE 7 and older: Click on Tools, then Windows Update. Follow the instructions.
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FaultWire Staff
Posted: 5-Oct-2008 |
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Uninstall the Last Install |
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If you can get the system up for more than a few minutes or can use safe mode, try removing the last installed software application or driver.
For removal of an application (Windows 8+)
- Press the Windows Key and X together, then Control Panel, then Programs and Features.
- Select the software to uninstall and select Uninstall.
For removal of an application (Windows 7 & Vista):
- Click on Start, Control Panel, then Programs and Features.
- Select the software to uninstall and select Uninstall.
For removal of an application (Windows XP):
- Click on Start, Control Panel, then Add or Remove Programs.
- Select the software to uninstall and select Remove.
To disable a driver:
- Bring up the system information dialog:
On the keyboard, press the Windows key + Pause/Break.
or
Select Start, right click Computer and on the drop-down, select Properties.
- Click on the left side option Advanced system settings (7/Vista only).
- In System Properties, select the Hardware tab, then click on Device Manager button.
- Find the hardware/driver of interest (you may need to expand a choice at the "plus" graphic) and double click the choice.
- Select the Driver tab. Here you can perform a number of actions such as update the driver, roll Back the driver to an older version, disable or uninstall the driver.
- Click OK to exit, then close the Device Manager and other previously opened dialogs.
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FaultWire Staff
Posted: 5-Oct-2008 |
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Also see our list of common Fatal Error Solutions. |
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Forum Help |
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Check out what others say about this issue and review or add your own comments and solutions!
Go to Forums on topic. |
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Technical Details |
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 After the Stop code will be 4 hex values: {Parameter 1, Parameter 2, Parameter 3, Parameter 4}.
Parameter 1 specifies the cause of the issue.
| 0x00000000 |
An active worker item was freed. |
| 0x00000001 |
An active worker item was queued. |
| 0x00000002 |
A queued I/O worker item was freed. |
| 0x00000003 |
An attempt was made to initialize an I/O worker item with an invalid object. |
Parameter 2 specifies the address of worker item.
Parameter 3 depends on the value of Parameter 1.
Parameter 4 depends on the value of Parameter 1.
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Vendor Summary |
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While BSoD fatal stop errors are identified by Microsoft Windows, they are often caused by
non-Microsoft applications, drivers and hardware issues. |
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Research this Issue |
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Notes |
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While we believe this information up to date and accurate, FAQware is not responsible for any inaccuracies. If you find something that is out of date or inaccurate, please let us know at
so we can correct it. |
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