PC runs, but "no signal" msg on monitor - TechRepublic
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December 16, 2005 at 02:14 PM
dan

PC runs, but “no signal” msg on monitor

by dan . Updated 16 years, 8 months ago

Recently, I built a home-theater PC (HTPC) with the following components:

Motherboard: ASUS A8N-SLI Socket 939 NVIDIA nForce4 SLI ATX

CPU: AMD Athlon 64 3200+ Venice 1GHz FSB 512KB L2 Cache Socket 939

Memory: 1GB (2x512MB) SDRAM Unbuffered DDR 400 (PC3200) Dual Channel

Graphics Card: eVGA GeForce 6600 256MB TV-out/DVI/HDTV PCI-E Heatsink Edition

Operating Sys: Microsoft Windows XP Media Center Edition 2005

HDTV Tuner: DVICO FusionHDTV5 Gold Plus

Monitor: Samsung HL-R5668W 1080p HDTV connected to PC via VGA cable

I’m running Microsoft Windows XP Media Center Edition (w/ all the most recent updates from Microsoft) and use a Samsung TV as a monitor via VGA cable between the GeForce 6600 graphics card and the Samsung TV.

Unless it’s doing something, this computer is always in standby mode. I run an application that automatically wakes-up the computer and records high-definition TV shows for me. The monitor (Samsung TV) is usually powered-down while the computer is recording.

This system runs great except for one issue. Here’s what happens:

– Computer running and recording as intended; monitor not powered-up.

– While the computer is running, I power-up the monitor.

– Monitor always displays “no signal” error message.

– Computer continues to run and record as intended.

No matter what I do — including powering the Samsung TV up and down and unplugging and replugging the VGA cable — the computer refuses to display anything on the screen. I’m sure the computer is running, because the TV shows being recorded are always OK, and I can “see” this computer from other computers on my wireless network.

It seems like the motherboard doesn’t “enable” the graphics card to create a display signal when the monitor is off.

Any suggestions on how I can get the motherboard to “wake-up” the graphics card when I turn on the monitor while the computer is running?

Thanks!

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