i know writting long posts is boring to read
but to anyone interested i want you to know just how fucked up some things can be for no specific reason.
when i bought my pc my couzin set it up for me. I had issues the first year with my screen. It could not receive signal 3/10 times i switched it on. After it just passed away.
Recently i have bought a couple of new hardware to improve the performance of my pc. Upon installing them (ssd) my screen would not post a signal. i took down the whole motherboard-pc and reconnected everything 5 times. It finally worked for some reason,it just so happened my couzin was around and fixed the pc using bios settings. (i think i placed the diskdrive to a wrong sata.
Yesterday i removed the cable from my dell screen and connected it to my hd samsung tv. DVI -> hdmi using an adaptor.
the video input could not be located.
i switched it back and the dell screen could not locate a signal either
these were my attempts to fix the problem
1) i changed the cable to the second dvi output (back of the card
2) i took the whole pc appart 3 times
3) changed the gpu to another pci-ex
4)broke a couple of things around the house (hourly)
no effect. Please i need help with this damn thing.
this is what happens ( i turn the pc on it loads ok. it goes to windows (log in ) makes the sound i can blind type my password.)
GPu has both lights and fan working.
no overclocking on gpu.
and guess what?:????????????????????????????????????????????????? NO DISPLAY. i cant enter bios i cant do anything. help help help.!!!!!
While the OCing shouldnt hurt your video out as a test to rule things out you should undo anything youve done since you started having this issue. I have the same setup as you except I have a 250 instead of a 280.
If your 280 is running at the default speeds (there are some that come factory overclocked) and you have 2x120mm fans and 3 usb devices and adding 30% capacitor aging for good measure... your total power draw is currently 506W. With a recommended power supply of 550W and needing 37.5A on the 12v rail(s). If your power supply is old or has lower specs than this you will have problems.