Mahmoud Khairt :
ok but when i plug usb or dvd in laptop to re install it hangs
Maybe the issue is with the laptop then. I'd suggest you to check the warranty and if it's covered, call the manufacturer's tech support for assistance.
If it's not, I'd recommend you to find a professional repair services somewhere around you and take the laptop there. They should be able to provide you a thorough diagnostics and probably fix the issue.
Hope I was helpful though! Good luck!
SuperSoph_WD