Hi Buddies.. hope u r doing good.. i m hoping to be told the actual solution of the following problem that has been embarrassing me for the last few days.. The problem is: whenever i turn my PC on, it doesn't display, all the lights of board and casing get to turn on, but the display doesn't appear unless i change my DVI cable from gpu's first port to its second port, then turning the pc off and on once & twice, pc starts working fine and shows display perfectly.. my gpu drivers are upto date.. can u guide me how i can solve this issue.. and which part is creating this problem ?? gpu ? mobo ? rams ? psu ? any software? driver ? windows ? My PC specs are: Core i3 540 processor Asus ph755-v mobo 2x1tb seagate hard disks barracuda 4gb kingston KVR rams 1333mhz Sparkle Calibre GTX 460 graphi card HP dvd super combo Corsair vx550w power supply Asus vento ta m-21 casing.. Windows 7 64 bit OS ESET nod 32 business edition.. Note: i started getting this problem recently.. otherwise my pc was working fine.. please help me.. thx Regards,