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when i try to open the cmd.exe. a box pops up with the message of cmd.exe error windows 7 the application was unable to start correctly (0xc0000142). Click ok to close the application. my pc was infected with surabaya virus and rootkit and removed it with Avast free anti virus and malwarebytes, spybot, but after this i am unable to open some files like windows defender and some system files.

  • It sounds like the tools improperly removed the infection. Without access to a command prompt your problem cannot be solved. The only real solution is to install a fresh instance Windows. – Ramhound Jan 6 '15 at 13:33
  • if you have configured system backup and restore,try to do the restore with the latest version of the backup which would give the error-free installation – vembutech Jan 6 '15 at 13:38
  • Find if conhost.exe present in system32 or syswow64 folder. – Biswapriyo Aug 3 '17 at 8:13
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I have read this began for some users after a Windows Update in Nov 2014. It seems to be a conflict with Geforce Experience (Nvidia graphics cards) and the Win Update. Uninstalling Geforce experience has worked for many people. Perhaps Nividia are aware of the issue and have released a new driver by now - worth checking.

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