Hello I have a GTX 260 video card and from 1 month I have a strange problem. Once I start the computer there is no video signal coming from the video card or at least the signal that is coming from it it is not showing anything. So I have to leave the computer turned on for around 15 minutes (before was less) and than at some point the video signal is start working and I can see the windows log-in box, and then there aren't any problems. Even if I turn off the computer and start it again it starts normal. Only if I turn it off and leave it for longer time turned off , than once I turn it back on I have to wait again.
Any idea what might be the problem ? do I need to change the video card or it is something else ?