Can not set lcd monitor resolution higher than 1024*768.

MARVININER

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Jun 26, 2014
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Hi! A few weeks ago I notice that my old generic 17-inch lcd monitor (native resolution=1280*1024,vga and dvi support only) was acting strange. First, the screen is getting covered by flickering purple pixels; I eventually fixed that by replacing the dvi cable. But then, a week after the monitor is having problems again. The display is having static lines like a TV with bad signal reception and then eventually it would turn on and off. I rolled back then updated my display drivers but eventually the remedy that worked so far is lowering the screen resolution to 1024*768. Anything higher than that and the problem starts sooner or later. What seems to be causing this problem? Is it my monitor, graphics card or my power supply?
My pc specs are (not the best of parts by the way)
AMD FX-4100 3.6 ghz
Gigabyte ga-880gm-usb3l
amd radeon hd 4250 integrated graphics
generic 600w psu
4gb ddr3 ram
I am on a very tight budget right now so the last thing I want is to buy any replacement parts. So, if i can still do something to have it working like it used to, i would be very grateful.
 
Sounds to me like the monitor may be on its way out. I know on LCD televisions they have two or more circuit boards on the inside, one that handles power, the other handles signal. The monitor should be similar to that, here's the fix. If it's the power board, unstable power might have damaged the lcd panel. You might need to replace both. If it's the other panel, you may only need to replace that, unless it's something totally unrelated, unfortunately, with issues like this, it's hard to tell where the problem lies, could be failing input connector, could be your cards output. Gotta get over some one's house with good working stuff and try all the different combinations until you can narrow it down.
 

MARVININER

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Jun 26, 2014
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Well if that is the case then I guess I can't do anything as of the moment but to hope that the problem will not get any worse that it already is.At least until I can afford to buy a new monitor. But I still need to make sure that it is the monitor and anything else before buying anything
 
That's the hard part, figuring out where exactly the problem is, cause it could be a fault in a lotta places, on the upside, parts for older computers aren't too terribly expensive. More expensive that not buying new parts, but still not too bad, depends on what you need. With a generic PSU though, it might even be that that's going it might be pushing more juice than needed to something causing it to fail prematurely. I wish it were better news.
 

MARVININER

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Jun 26, 2014
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Hmmm...I still need to make ends meet in the meantime. I wish I have enough technical skill when it comes to hardware troubleshooting to at least spare me the money i'll spent in hiring a technician.