videocard wont work

[Guest]

While I was playing a high graphics game my monitor screen went blank. (Black
screen.) I disconnected my agp and connected to my on-board vga and it works.
Assuming it was my vid card I got a new one and still have same problem. no
vieo.
I got a new power supply (540 watt) and that didnt fix the problem. Thinking
the AGP slot was bad I replaced the mother board and that didnt fix it. I
connected to a different monitor and that didnt fix it! Im out of money and
patience. Can anyone help?? I have even reinstalled windows and updated all
drivers.
This is my set up.

mother board: Gigabyte 8S661FXMP-RZ
Video card: Nvidia GeForce 6600
CPU Brand : Intel Pentium 4 3.0 ghz
Operation System : Win XP SP : 2
Memory Brand : Samsung DDR 512
Power Supply : 540 W

 

[paulmd]

While I was playing a high graphics game my monitor screen went blank. (Black
screen.) I disconnected my agp and connected to my on-board vga and it works.
Assuming it was my vid card I got a new one and still have same problem. no
vieo.
I got a new power supply (540 watt) and that didnt fix the problem. Thinking
the AGP slot was bad I replaced the mother board and that didnt fix it. I
connected to a different monitor and that didnt fix it! Im out of money and
patience. Can anyone help?? I have even reinstalled windows and updated all
drivers.
This is my set up.

mother board: Gigabyte 8S661FXMP-RZ
Video card: Nvidia GeForce 6600
CPU Brand : Intel Pentium 4 3.0 ghz
Operation System : Win XP SP : 2
Memory Brand : Samsung DDR 512
Power Supply : 540 W

It sounds as if the AGP slot died. Just to be sure, try reseating the
card.

 

[w_tom]

Let's assume your original problem was a video controller failure.
So you bought another power supply but don't know if it works or is
really sufficiently sized. Now you have two problems. Complexity
increased only because you were shotgunning.

Start over and change nothing more. First establish what is working.
For example, that ubiquitous 3.5 digit multimeter (necessary for
computer repairs) measures voltage on purple wire (when power is off
but AC power cord is connected). Record that number. Then measure
voltages on any of red, orange, and yellow wires as power switch is
pressed and when multiple peripherals are accessed simultaneously
(multitasking to increase power consumption). What are those voltage
numbers in three digits?

If numbers are in spec, only then do we move on. Better computer
system manufacturers provide comprehensive diagnostics for free. In
your case, diagnostics for each component must be downloaded from the
manufacturer. In your case, Nvidia diagnostics would be a good place
to start. Not only testing the controller but also testing video
display at its so many modes. For example, VGA mode is (if I remember)
13. But those higher end graphics may use modes 50 or higher. Yes
there are that many different configurations in both video controller
and in monitor. Just because something works in one mode does not mean
it works in another. Diagnostics should display in many combinations
to confirm all hardware.

Notice how it goes. Confirm integrity of each. Collect facts long
before swapping anything. Now we don't know how many problem exist (do
to swapping) and you have spent money like water.

Meanwhile, what did the system (event) logs report. Well warnings
of impending doom may have been erased because you 'fixed' Windows
rather than first collect facts. Stop trying to fix things without
first learning what is wrong. Frustration is common among those who
destroy the evidence rather than follow the evidence. Also what does
Device Manager report?

Start with the meter. Provide those voltage numbers so that your
replies are useful. Begin the step by step process of confirming what
is working. Eliminate the suspects one by one. Follow the evidence -
don't shotgun.