C++ :: Computer Restarts Every Time Program Is Compiled

I have a weird problem, my computer restarts imidiately after program writen in dev-cpp is compiled AND run. When I run any program, it lasts about 1 second, then program closes, and computer reboots. It doesn't matter whether program is writen now or earlier, my dev-cpp version is 4.9.9.2. Source code can be as simple as this:

#include <iostream>
#include <conio.h>
using namespace std;
int main() {
getch();
return 0;
}

and it restarts anyway...