Category: windows 8

DPC_WATCHDOG_VIOLATION BSOD

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This bug check indicates that the DPC watchdog executed, either because it detected a single long-running deferred procedure call (DPC), or because the system spent a prolonged time at an interrupt request level (IRQL) of DISPATCH_LEVEL or above. The value of Parameter 1 indicates whether a single DPC exceeded a timeout, or whether the system …

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STICKY NOTES

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Sticky Notes is one of the gadgets seen with Windows Vista. The gadget is designed to replicate the old style paper sticky notes that surfaced back in the 1970s. Sticky Notes uses Microsoft’s SQL Server Lite which is the actual store for the notes. Unfortunately the database is not easily found to back it up. …

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ERROR CODE 0X080070091

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Error code x080070091 has been seen mostly with file system errors such as a problem with a folder that a user cannot delete etc. To fix it tpen directory in question and try to delete the individual files there until you come across the file that’s causing it not to delete (there’ll probably be at least …

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MALWARE AND SECURITY

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Malware became apparent early on with the personal computer. Over time security tools became available to combat the problem. Windows Vista and above come with Windows Defender which provides some modicum of security. Other security programs were expected to complement or replace it. In practice many used Windows with no additional security programs in place. …

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TIMEOUT DETECTION & RECOVERY

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Introduced with Windows Vista, the timeout detection and recovery (TDR) feature is intended to deal with driver problems or hardware errors without requiring the user to reboot the system. In Windows XP the machine would simply freeze or show a BSOD. One of the most frequent causes for the TDR error is the lack of …

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DESKTOP WINDOW MANAGER

The Desktop Window Manager is a compositing window manager. This means that each program has a buffer that it writes data to; DWM then composites each program’s buffer into a final image. By comparison, the stacking window manager in Windows XP and earlier (and also Windows Vista and Windows 7 with Windows Aero disabled) comprises …

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WINDOWS DISPLAY DRIVER MODEL

Video cards all have to fulfill some basic functionality to be able to boot DOS etc. Worse they also have to have a small BIOS to contain the bit mask for the characters on the DOS VGA display. Over time the CPU has evolved considerably as engineers have figured out how to ramp up the …

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ERROR CODE 0X8000FFFF

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Error Code 0x8000FFFF has been seen with Windows Update. It has also been seen with the Windows Store. This seems to be one of the catastrophic error codes. This can be fixed some of the time with the Troubleshooter tools with Windows. This is found in the settings for Windows 8 and Windows 10. The …

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SYSTEM PROTECTION

System protection is a new feature with Windows Vista and above. It works with NTFS disks which support shadow copies. Generally it works like system restore with files so that if a problem like a bad driver or bad windows update will not cause problems. Everyone knows how bad video card drivers can be, In …

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BITLOCKER

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Bitlocker is an encrypting file system that was designed in part to protect the boot process in Windows. Bitlocker also protects personal files. If a machine is reset, personal files are not recoverable but the machine can be put to use as a new machine. Bitlocker shipped with Windows Vista Business and ultimate. More recent …

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