GFX card output keeps blinking off

[Mach234 (or similar).]

Hey all,

Have a bit of an issue with my pc and wondering if anyone had any ideas/pointers?

Yesterday my desktop/gfx card started blinking out, my monitor would just go black for a second then come back on again, it started maybe doing it every 30 seconds or so I shut everything down and rebooted and same again (same when I left it off for about an hour) left it on for about half an hour and over that time the frequency increased and the screen stayed black for longer. Tried again this morning and there was some brief flickering when there was an image on the monitor but pretty much as soon as I was logged in the screen was just permanently black. My monitor goes to blue screen if it senses there's no input but it wasn't doing that so my gfx card is outputting something but just black. I took out the gfx card and plugged straight into the motherboard on board graphics hdmi out (although I've never used it before) but just got black screen again..

Any help or ideas what it might be or what to try would be great.
Thanks.

 

[Mach234 (or similar).]

Hey, okay thanks for your replies, and yes I do feel a bit sheepish now. Tried a new cable.. and all works well . Phew, strange wouldn't have thought of it as I don't think i've even touched the cable in ages.
Thanks again

 

[Mach234 (or similar).]

Yeah still got me worried a bit tho so think will do a full diagnostics tomorrow.. Also posted a bit back about upgrading my rig so think this was a good kick up the but to put it back on top of the list. Thnx