disc image file won't mount

[Dgrayman00]

I downloaded a PS2 Rom with the PSX2 or whatever emulator its called. I installed the emulator and unzipped the rom with 7 zip. I get a message saying disc image file wont mount. I Downloaded winrar, copying it and pasting to a different folder, everything. I got to the menu of the game but then it said I need to insert the disc so i just uninstalled everything. How do you fix this? Game is an ISO file btw

 

[rgd1101]

could be bad iso, make your own with your game disk.