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Why is the screen going black?

post #1 of 10
Thread Starter 
Ok so I'm fixing a friend's computer (Dell Dimension 9200) and I'm facing a problem at this moment.

These are the computer specs:

  • Intel Core 2 Duo E6300
  • Dell motherboard (P965 Chipset)
  • 4GB of DDR2 RAM @ 533MHz
  • Nvidia GeForce 7900GS 256MB RAM (Upgraded from a 7300LE, freebie :3) with 266.58 drivers
  • Windows 7 Ultimate x64 (Upgraded it from Vista Ultimate)
  • 375W Dell PSU
YES I did download the proper drivers for everything (weren't few since Windows 7 already included a bunch of them).

So the problem is this: I turn on the computer and it boots, then it shows the "Starting" screen on windows 7, but before showing up the users's menu, the screen goes black for half a second, then goes back to normal, then again goes black for half a second, then goes back to normal.

I log into any account (2 accounts were made) and the screen does the same, the same amount of times!

Then I test it, looks ok, but then I plug in a USB device, be it on the front ports or the back ports, and the screen goes black again, for half a second then comes back to normal.

I unplug the device, and same thing happens!

I connected everything properly, yet I fail to understand what the problem is...

halp? T_T
Edited by Icekilla - 3/28/11 at 5:26pm
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post #2 of 10
Maybe it's the GPU itself?

Do you have an extra GPU that you can test in the system? Or maybe test it in your system?
    
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post #3 of 10
Sounds to me like a video card problem.. Test the comp with a spare card and see what happens, that is if you got a spare card.

Quote:
Maybe it's the GPU itself?

Do you have an extra GPU that you can test in the system? Or maybe test it in your system?
Aww damn beat me to it
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post #4 of 10
Thread Starter 
yup, I have the 7300LE, I'm planning to fire it up as soon as I finish passing the files to the guy's HDD lol
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post #5 of 10
Hi Icekilla. On top of the advice already given, you could also test your graphics card in a second PC to see if it gives the same issue.

Videocardshop.
post #6 of 10
Thread Starter 
Ok so I just installed the good ole 7300LE on this Dell, for a reason it didn't install the drivers for it despite the fact that the Nvidia drivers are already installed on this machine. I'm downloading the drivers again to reinstall them, I hope this will work, I'll report back when they're installed.

EDIT: Reporting back, everything is A-OK with the 7300LE, but what could be causing the issue with the 7900GS?

I really want to give my friend this Nvidia GPU What should I do to see if it's working properly? Maybe I could test it on my sig rig.
Edited by Icekilla - 3/29/11 at 12:20pm
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post #7 of 10
Thread Starter 
Confirmed, it's the GPU... What could the cause be?

Could it be the power supply unit not giving enough power to the entire system?

EDIT: The screen also goes black when I connect my headphones to the computer.
Edited by Icekilla - 3/29/11 at 12:37pm
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post #8 of 10
Any chance the power connector pins are loose? I had that happen at least once. Probably because I was using the power connector as an anchor point to hold my card up & keep it from sagging.
post #9 of 10
Thread Starter 
There's only 1 PCI-e power connector on the Dell's PSU, I'm testing the GPU on my sig rig as we speak (installing drivers), so what I'm going to do is: Install drivers, run a couple of games and report back ok?
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post #10 of 10
Thread Starter 
Reporting back: I'm having the same issues here in my sig rig, but strangely, I've been testing the GPU with games and 1080p videos, and it's working great on that, there are no performance issues so... What do I make out of it?

Well, he doesn't wants the GPU so... problem solved?
Edited by Icekilla - 3/29/11 at 1:41pm
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