LCD Monitor Fuzzy or Blurry

Written by Allen White on. Posted in General

Sometimes your LCD screen can appear blurry and fuzzy, words will look like they have a glow etc. This can be down to a number of issues. Below are the most common.

* Refresh rate too high. CRT monitors normally give a more stable image (with less flickering) with a high refresh rate. This is not necessary with LCD monitors, and setting the refresh rate too high will degrade the image quality. Set the refresh rate to 60hz.

* Display resolution different to monitor’s native resolution. LCD monitors have a fixed number of pixels vertically and horizontally – this is its native resolution. If the current display mode is set to a lower resolution then there will be some interpolation going on. For the crispest display set the display resolution the same as the monitors resolution. For example, if the LCD display supports up to 1024×768 then set the Windows display resolution to 1024×768.

* Poor quality VGA extension cable. A poor quality VGA extension cable (or KVM switch) will give signal loss which will degrade the image. (This can be characterised by ghosting and shadows.) If the image is crisp when the LCD monitor is plugged in directly to the pc but not when plugged in via a VGA extension cable or KVM switch then the cable/switch is the problem.

* If using Internet Explorer 7 or later then try switching off ClearType. ClearType attempts to improve readability on LCD monitors but cause the text to look less than sharp and fuzzy.

 
 
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Allen White

Allen is a Technical Consultant for an IT company in the North East of England and holds the following accreditations. MCSA, MCSE, MCTS, MCITP, CCA, CCSP, VCP 4,5 and HP ASE, AIS - Network Infrastructure. Backup Academy Certified. I run this site in my spare time so if I help you then PLEASE take the time to share using the share tools on the site.

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