Computer Hope

Hardware => Hardware => Topic started by: jbarnes on October 15, 2009, 01:38:12 PM

Title: Monitor showing "No Sync" or "Signal Out of Range"
Post by: jbarnes on October 15, 2009, 01:38:12 PM

I have an HP Pavilion desktop computer that is about 4 yrs. old and am running XP with SP3. I recently upgraded the drivers for my Diamond Radeon X1050 video card. I have a flat panel screen (I think it's an Acer - inherited it from my mother) - model no. is L17NCDT if that helps.

While working in a particular application like Word or Excel, or playing a game, all of a sudden the monitor goes blank and shows either "No Sync" or "Signal Out of Range." Since I can't see anything when this happens, I have to manually turn the computer off and then back on.

Any ideas why this is happening and what I can do to fix this? It gets really irritating since I work from home and may have several windows open at once, then I have to start all over again.

Thanks!

Title: Re: Monitor showing "No Sync" or "Signal Out of Range"
Post by: Allan on October 15, 2009, 01:39:47 PM

I start by rolling back the driver if I were you.

Title: Re: Monitor showing "No Sync" or "Signal Out of Range"
Post by: jbarnes on October 15, 2009, 01:44:25 PM

Thought about that, but not sure how.

Title: Re: Monitor showing "No Sync" or "Signal Out of Range"
Post by: jbarnes on October 15, 2009, 01:46:36 PM

Just found the "Roll Back Driver" button. I'll give that a try.

Title: Re: Monitor showing "No Sync" or "Signal Out of Range"
Post by: Allan on October 15, 2009, 01:47:57 PM

Go to Device Manager and double-click on the display adapter - video card entry. Driver Tab - Roll Back

Title: Re: Monitor showing "No Sync" or "Signal Out of Range"
Post by: jbarnes on October 15, 2009, 08:22:52 PM

Rolled back the driver. While playing a game, the screen went blank and came back with a bunch of columns filled with pixels. So now it's even worse than before. Any other suggestions?

Title: Re: Monitor showing "No Sync" or "Signal Out of Range"
Post by: Broni on October 15, 2009, 08:29:40 PM

Video card, itself may be overheating, or going bad.

Title: Re: Monitor showing "No Sync" or "Signal Out of Range"
Post by: jbarnes on October 15, 2009, 08:38:44 PM

Thanks for tip on overheating. That rings a bell as I hear a fan kick in and run loudly sometimes, especially when playing games. I looked at the topic about temperature and found this URL:

http://www.cpuid.com/hwmonitor.php

I'll run this on my desktop tomorrow and see what happens. If the video card is indeed overheating, any suggestions?

Title: Re: Monitor showing "No Sync" or "Signal Out of Range"
Post by: Geek-9pm on October 15, 2009, 08:41:21 PM

He can remove the video driver in safe mode.
Reboot and install the driver again. Should reset the video to default.

Title: Re: Monitor showing "No Sync" or "Signal Out of Range"
Post by: Broni on October 15, 2009, 08:47:47 PM

Open the case (while computer off) and give it a good cleaning with a can of compressed air.