No display on monitor

BULLETXda

Honorable
Dec 1, 2013
27
0
10,530
Ok I will try to be as descriptive as possible

Yesterday while playing a game on my pc , the screen showed white and orangish verical lines(whole screen), and it kept showing that until I switched off my pc,
Next time I tried to start it, I heard the usual beep but surprisingly the monitor didnt detect any input from the hdmi.
I thought that to be graphic card problem and opened my case to see for the same.
But to my amusement the fans on the GPU were running fine. Next I checked both the monitor and hdmi cable and they were fine. Then I used a vga cable (with dvi to vga adapter) to connect to monitor. This time around I got the message on monitor(monitor gui) that i need to check the resolution and refresh rate of the input as it is not supported by the monitor.
I removed the battery for 5 mins but that didnt help, also played with ram but nothing seems to fix it.
One important point is that after the beep the num cap and scroll lock led on keyboard can be toggled , which made me think that the os is loaded but after pressing the power button poof! it turns off . And it wont be possible to shut down that fast if the os was running.
So please help me to diagnose the problem.
Here are my pc specs
Asus M5A97 R2.0 - motherboard
Sapphire R9 270x 4GB
AMD FX 6300 (Stock cooler)
Corsair XMS 3 (4gbx2) Ram
Corsair VS550 PSU
Couple of seagate hdd(500gb and 1tb)
Dell S2240l monitor( 1080p at 60Hz)
Dual Boot Windows 8 and ubuntu on 500 gb hdd
Thanks in adavnce waiting for reply.
Edit: No integrated GPU