Need this off, it's on my father inlaw laptop

  JeffStar 00:54 AM 12 Dec 11
Locked

trojan:Win32/FakeSysdef pops up and system turns off

  difarn 07:40 AM 12 Dec 11

This apears to be malware - have a look at this article

When you have recovered the PC you also need to make sure that the laptop has adequate security protection and that windows updates are indeed up to date

  slatwater 02:43 AM 13 Dec 11

Read this self-learning removal guide about it and wipe all its content away

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