strange problem: Monitor turne fuchsia and goes off then PC never respond again

[William3D]

Hi,

Today a strange problem occur to me: I switch on my PC and when I logged in to win 7 64bit beforeI do anything else I found the screen pictured become very noisy with fuchsia colors then message appear on screen "No HDMI signals" then the monitor goes off (like in sleeping mode)

the PC did not respond until I shut it down then I cleaned my gfx card and it work again. but I notice also that in my motherboard the phase power leds (that behind keyboard, mouse, network ports) are flashing with weak lights I used to remember their light was always on and fixed and this is the situation with all other leds in the motherboard for example the other phase leds on the right (below the PSU) are on with strong lights. is this mean problem with motherboard phase power ?

My Config (No OC):

OS: win7 64bit

CPU: i7 860

Motherboard: BioStar i55

PSU: CoolerMaster 850W Pro

RAM: 8 GB @ 1600

GPU: MSI GTX 460

H.DD: 2 (1 TBx1 TB)

Thanks

 

[William3D]

I made some tests now using super PI and FurMark and my PC is stable !! hope it is temporary problem

 

[TheOsTech]

Sounds like a tough one. It could be the lights are not related and only now have you noticed them. If it has passed all the tests hopefully its just a one time problem. If not the possible things that come to mind are power source, video card, motherboard, video cable or monitor. If the problem happens again post more information and we will try to help you narrow things down.