Now tried
PC-TV and still missing blue color.
I'm pretty sure its because of that windows update.
I mean the update which computer asks to do when you turn off your computer. As I pressed it, the 1 of 3 steps went fast (5min top), but the 2 of 3 was taking too long and I went to sleep, in the morning the computer was turned off and when I turned it on, the screen was missing blue color. So it can not be the cable nor the PC's plug as I didnt remove the cable from PC.
As for Windows updates taking a long time, I don't think that's really a problem. In my experience they sometimes just take a long time for no apparent reason (it's not like it says the ETA time when updating). But I've never had any problems as what you're describing with Windows updates.
If everything worked before the update and nothing was changed during it, it could be a faulty update (or something). But I really don't know if (or how) you can remove Windows updates other than formatting. Then again, there could be ways.
Also, if it really is a software problem, maybe try reverting to older video drivers instead of using the newest one, it might help. (although I do believe Windows doesn't update your graphics drivers in Windows update, but hey, who knows)