Peripherals forum


Scanlines on Monitor

by Compucles / July 22, 2011 4:53 AM PDT

All of a sudden, scanlines appeared on our monitor, and resetting the monitor's settings doesn't help. How do we get rid of them?

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Clarification Request
Too short on hardware details
by Steven Haninger / July 22, 2011 5:53 AM PDT
In reply to: Scanlines on Monitor

Give the monitor make/model and what sort of graphics card it's attached to. Also give other PC hardware information and the OS you are using.

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by Compucles / July 22, 2011 6:28 AM PDT

Make: Acer
Model #: V223W
Display Adapter: ATI Radeon HD 4200
OS: Windows XP: Home Edition
Processor: AMD Athlon II X2 245

Is that enough info?

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Well, you did forget the monitor
by Steven Haninger / July 22, 2011 9:11 PM PDT
In reply to: Clarification

Make, model, type, etc. LCD or CRT?..and by scanlines do you mean some sort of vertical or diagonal thin traces that are there constantly or are they changing? My first thought is to try the monitor on another machine if possible and/or check your PC with another monitor. This considerably narrows the possibilities. You rule in or out what's the easiest to do. You can also see if the anomaly exists while running in safe mode. If you still have the scan lines in safe mode, it's more likely the monitor or display card. If not, you start looking at the driver, some setting, or the monitor's failure to respond to it properly.

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by Compucles / July 23, 2011 7:30 AM PDT

I already told you the make and model of the monitor. I don't know what the difference is between LCD, CRT, or any other type. The scannlines are thin horizontal lines that are constantly there, just like on old TVs except computer graphics aren't designed to work with them. We can't hook the computer up to another monitor. Yes, the problem is still there in safe mode.

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Sorry, I mistook your reply as the PC's hardware
by Steven Haninger / July 23, 2011 9:01 AM PDT
In reply to: More

Ok, here's what I'd do to rule out the OS. Can you download some "Live Linux" iso or even some utility iso and burn to CD. See if the lines are still there. If they are, it's not Windows. You're left with the display card or the monitor or cable. If the cable is detachable, you can try another or just reseat things. I suspect you have. You're going to run out of options if you cannot try another monitor or plug this one into another PC but, if it came down to only the video display device or monitor, my guess would be the monitor has the problem.

All Answers

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"All of a sudden" = Time to try System Restore.
by R. Proffitt Forum moderator / July 23, 2011 7:40 AM PDT
In reply to: Scanlines on Monitor

This is what that feature is for. Try it.

Beats the heck out of swapping monitors, cards, drivers and gasp, service counters.

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by Compucles / July 23, 2011 3:17 PM PDT

I've already tried that.

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Then we are stuck with swapping monitors and cards.
by R. Proffitt Forum moderator / July 24, 2011 9:11 AM PDT
In reply to: Nope

You could try booting an UBUNTU LIVE CD as a test. NO INSTALL. Just boot and see what it shows.

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Never mind
by Compucles / July 25, 2011 7:08 AM PDT

It's still under warentee, so we're just going to send it in to get fixed.

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