ok problem has been started 2 days ago
first pc restarted for several times
than it showed blue screen showing hardware issues
than i tried to start pc through Linux live cd
pc started i take all the backup form my hard drive to another portable hardisk
than i tried to start pc through windows 7 bootable disc
pc started but it was unable to format the any of the drives for fresh installation
than after several tries pc starts makes beep but no further happens it shows only black screen
i reseted all the hardware in my pc but it doesn't work black screen has been frustrating
plz anybody help to sought out this problem quickly