I have installed win 7 in my new computer, evrything was working perfect while I was using it without any external hard disk.
Now I shutdown the computer just to connect the External HDD, after restarting it windows loads and mouse pointer appears with black screen. after waiting for sometime the blue screen error appears and system restarts.
everything works fine if I remove this external HDD. also if I connect this HDD to another old computer it works smoothly.
I don't understand whether this is a windows problem or hardware problem, please help me and guide what to do.
Thanks in advance