Trojan horse patched_c.MIS HELP PLEASE!!

Hi, AVG scan showed my laptop was infected with Trojan horse patched_c.MIS, it in C:\Windows\System32\Services.exe.

I tried all sorts of Malware scanning tools but had no luck to completely remove the trojan virus. If I tried to remove it with AVG, my computer shuts down by itself.

Could you please help! Thank you.

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