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PC powers up, but nothing comes on screen

Posted on 2004-03-28
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Last Modified: 2010-04-26
I'm running an AMD Athlon XP 2500+ (Barton) on an A7N8X Deluxe Mobo with 512 MB of PC 2700 (2 X 256 DIMMS). I'm using Windows XP Pro. My PC was on and running fine, I left it for a while and when I came back there was nothing on the monitor screen. I juggled my mouse...nothing. Restarted, the PC powers up, but nothing on-screen. Checked inside, everything seems fine. I tested the video-card in another machine and it works. On thing I notice is that the HDD LED stays on when the PC is off. Is this an indicator of anything specific? Can anyone help?
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Question by:donvinton
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Snowguy earned 500 total points
ID: 10701086
Try another power supply.
The fans run on 12v the power supply has 3 voltages 12v 5v and 3.3v. If you loose the 5v or 3.3v it can still act as if it is powering up.  What happens is you don't get power to ram vga or cpu. this is why when the PSU dies or is weak you usually don't get any post warning beeps or video.
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by:donvinton
ID: 10701102
Will try another power supply and report back.
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by:donvinton
ID: 10701151
Tried another power supply and things worked. Thanks a lot.
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by:Snowguy
ID: 10701243
Your welcome glad to see you got it going.
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