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No signal when installing new graphics card

Last response: in Graphics & Displays
March 16, 2012 11:39:49 PM

hi ive just signed up due to this issue, never had a gfx card fail on me but now have 2 in as many weeks.
my system :-
Athlon 64 fx62 dual core
Asrock Alivexfire esata2
4x1gb ddr2 800
1tb seagate sata hdd
300gb ide hdd
lg dvdrw
and a 8600gt with a busted fan working on a ACE black 600watt atx 2.03 psu.

The GFX in question are a BFG 8800gtOC 512mb, which i installed and got no signal but the fan powered up and stayed constant 100% speed.
The second is a hd3650 which i got just so i could play somethin til i sorted the 8800 out, this worked fine for 3-4hrs and then same symptons came up, Ive tried it on a ASUS M2N NM/s board and same problem although i have gotten a signal a couple of times on that but only for post and a few seconds on desktop.

Can anyone shed any light on the problem?
March 16, 2012 11:58:41 PM

I think its the PSU myself it is rated at 600watts with :-
  • 3.3v =28amps
  • 5v =30amps
  • +12v1 =18amps
  • +12v2 =18amps
  • -12v =0.3amps
  • +5vsb =2.5amps

    the only other thing could be the motherboard, its PCI-E1.1 and quite old.
    March 18, 2012 10:35:03 PM

    Tried breadboard, everything ok until i put the 3650 in, 1 long beep with 3 quick ones. i think ive been seriously unlucky and got 2 cards as they bit the dust. I cant see it being anything else as the 8600gt still works fine.