|"it says that pcsx2 has encountered a problem & needs to be close"|
That's an extremely generic error message. Any program crash handled by Windows will present that error.
"so kindly fix this problem."
First of all, we can't fix your problem without having access to your computer. Secondly, we can't fix your problem without knowing what it is. Third, we might not be able to fix it even if we know what is causing it. If its a programming error, only the PCSX2 devs can help with that.