tag archives: computers

windows xp: solution to bluescreen of death error c000021a (fatal system error)

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i recently lost power during an automated system update, which caused a fatal windows xp error. the computer would show the bios screen, try to boot, and just restart. booting into safe mode didn’t work either. using the boot options menu (press F8 just after the bios screen goes away), i was able to deactivate the automatic system restart after serious errors, and finally was presented with the following error code:

windows xp: solution to bluescreen of death error c000021a (fatal system error)

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how to print a timestamp with periodic output from WinWedge

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how to print a timestamp with periodic output from WinWedge WinWedge is a simple tool to obtain periodic readouts through a serial RS-232 or COM interface (e.g. from an analytical balance). unfortunately, though, obtaining a timestamp for every data point is not as intuitive as it could be.
here’s how you can automatically add a timestamp to your periodic output with WinWedge (tested with WinWedge32 Std. V3.0).

let’s assume that you’ve already configured the basic communication (“Port” – “Settings”) and timer settings (“Define” – “Serial Output Strings” > “Interval (ms)” and “Timer Controlled Output String”). [more...]

[categories: computers & technology, science] [tags: , ]

how to: firefox, flash objects and keyboard shortcuts

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if you like to use keyboard shortcuts in firefox (such as [ctrl]+[tab] for switching between tabs, or [ctrl]+[t] to open a new one), you have probably noticed that flash takes the keyboard focus away from a page and limits it to the flash object.
to regain ordinary shortcut functionality, you usually have use your mouse and click somewhere in the page manually.

here’s a quick way to solve this little (yet annoying) problem:

  • install the unfocus extension from mozilla’s official add-on library
  • create a new shortcut somewhere in your start menu, e.g. in programs / mozilla firefox
  • point the shortcut to
    "C:\Program Files\Mozilla Firefox\firefox.exe" -unfocus
    be sure to copy the entire line, including quotation marks and the “-unfocus” part.
  • if necessary, modify the file path to adjust to your firefox installation. in the german version of windows, the correct path is most likely
    "C:\Programme\Mozilla Firefox\firefox.exe" -unfocus
  • now, right click that start menu shortcut, select properties (“eigenschaften” in german), and set a keyboard shortcut (“tastenkombination”).
    i’m using [ctrl]+[shift]+[alt]+[e], but you can use anything as long as it doesn’t interfere with standard shortcuts such as [ctrl]+[x], [ctrl]+[r] etc.
  • you’re done.
    in some cases, you may have to press the shortcut combination twice in order to regain focus.