Good Day All,
I've got my computer with me for about 2 years now and have recently been experiencing some problem which i think might be due to my graphic card (but i could be wrong).
Occasionally when i start up my computer my monitor would show no signal even after I hear a beep sound to indicate that my computer have booted up normally. This problem can be "fixed" by plugging out the VGA cable which is connected to my video card port and connecting it to my onboard graphic card. However this will only allow me to use my onboard graphic card and not my external graphic card. When I enter device manager with my onboard graphic card, I will notice that my external graphic card is not under the display adapters tab even when I tick show hidden devices.
In order to get my computer to use my graphic card, I would have to restart my system a couple of time with my VGA cable plugged into my external graphic card port. When my computer is 'using' my external graphic card, in device manager I am able to see my external graphic card name but not my onboard graphic card name (which I find it quite strange). Under some load, e.g. Playing games like League of Legends, I will suddenly experience sharp drop in FPS and my computer will freeze. After a couple of seconds my monitor will black-out showing no Signal detected. At this point I have to force shutdown my computer.
Just only today when I was playing, I experienced something new which is some purple lines on my screen and my computer auto restarted after that. I would also like to add on that I do receive BSOD but happens very rarely when this problem start occurring.
My Specs is as Follows:
Gigabyte Z77-D3H Motherboard
Sapphire Radeon HD 7750 Graphic Card
Xigmatek 500W NRP-VC503
Thank You !