Dell laptop will not open

My dell laptop will not open it says there is a C00021a fatal system error
known DLL failed
staus of Oxc000012f(Ox8c7a4fa0 )x00000000)
system has been shut down
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More about dell laptop open
  1. Try a repair-install. Boot from the Windows CD/DVD. Select repair existing installation. Follow the wizard. You will not lose any data, but the registry and dll's will be restored to default. Also, some third-party drivers might need to be reinstalled, no biggie, you can get them from the website or the Driver CD that came with the system.
    Alternatively, if that fails, you can do a System Restore using the CDs that came with the system; you will lose the data with that option, the laptop will be restored to factory clean state.
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