'No Signal' problem when changing resolutions

imported_redlotus

Senior member
Mar 3, 2005
416
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After upgrading my comp this year, I've run into a minor problem. Here is the timeline of what happened:
1. In one swoop, I upgraded the following:
-Chaintech VNF4U upgraded to the eVGA mobo in my sig
-Chaintech 6600GT upgraded to eVGA 7800GT
-380W PSU upgraded to a 500W PSU
-Hercules HTXP upgraded to an Audigy 4

2. Overclocked my Winchester 3000+ to 2.25GHz at stock volts. 20 hrs prime stable.

This is where the problem came in, but it only started after a couple of days running my proc overclocked. During boot-up, everytime the screen changed, my LCD monitor would take so long to change resolutions that it displayed the 'No Signal' message. BTW, this only happened with the LCD, which is connected with a DVI cable. My CRT, which is connected at the same time, doesn't have this problem.

3. Return the proc back to stock speeds. This doesn't help at all. Every time the resolution changes, I get the 'No Signal' message for a few seconds before it finally kicks in.

4. Checked the manual for my vid card and it recommends that both of the plugs for the PCI-E power adapter be plugged into a single molex 'line' that isn't plugged into anything else. So I'm forced to remove one hard drive from the 'line' and I move all fans to the line that also has all of my drives connected to it. No changes.

5. Upgraded my CPU to a X2 4200+. Same issues.

6. I start looking for a new PSU and purchased one on the AT-FS/T forum from someone who tests a number of PSUs (including the one I bought from him) for his own site. Before the new PSU arrives, the problem goes away.

7. Install the new PSU which has its own PCI-E power connector on its own line. No sign of the problem I had before.

8. Replace the old hard drive that I unplugged with a SATA drive that has a bit more capacity. I also replace a fan with one that has a speed control. Lastly, I decide to install a neon flexible light that I've had sitting around for more than two years. The 'No Signal' problem returns. In fact, it seems like the amount of time it stays up has increased.

9. I remove the neon light thinking that maybe it draws too much power. However, this doesn't fix the problem.

So does anybody have any idea what might be going on here? Should I even worry since it doesn't seem to affect any of my games? Or is it a sign that bad things are coming my way? Any help would be appreciated.

Thanks,

-red

Edit: I forgot to mention that I'm going to be Stepping Up my vid card to a 7900GT. Maybe upgrading the vid card will fix the problem?
 

Matthias99

Diamond Member
Oct 7, 2003
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My LCD takes a few seconds to 'lock in' when resolution changes over DVI. I think it's odd that this would start and stop out of the blue, but I'm not surprised that it's taking a little longer than on the CRT.

I REALLY doubt this is a power issue; I'm not sure how you got started on that.
 

imported_redlotus

Senior member
Mar 3, 2005
416
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Actually, I have a really cheap CRT, so my LCD usually 'locks in' quicker than the CRT.

The reason I got started on the power issue is because of the way that I first hooked up my vid card. I wasn't paying attention and only connected one molex to the PCI-E converter. I only connected both molexes after I started getting the problem.

Maybe I'll just have to wait until I get my 7900GT from eVGA to see if it was the vid card.

Thanks,
-red