Replaced screen on a T23, now notably slower

[tpad1000]

I recently had the screen on a T23 replaced with an inferior screen (as this was the only 14.1 inch screen the repair shop had in stock).

Came as no surprise that the color quality has gone down, previously crystal clear pictures now look slightly poorer (as you can now see the individual pixels on this replacement screen).

Since then I have noticed that the laptop is notably slower than usual, from mouse movements, and keyboard use take a slightly longer time to reflect.

I am wondering if this is normal, i.e. simply replacing the screen may affect the video drivers to be a little slow?

Regards

[rkawakami]

Welcome to thinkpads.com!

Normally, replacing the screen with an identical unit (i.e., same resolution) does not affect the speed of the system. You say that you can now see "individual pixels" on the replacement screen and that basic input response has slowed. This leads me to a couple of conclusions:

- The video driver has been changed to something other than the normal S3 one; for example, Windows (I'm assuming) is now using a Standard XGA (or VGA) driver. You can check to see what the video settings are by right-clicking the desktop and choosing Properties and then clicking the Settings tab.
- The screen resolution set in Windows is not the same as the native resolution of the panel; in other words, Windows is set to use VGA (800x600 pixels), while the panel is XGA (1024x768). If the BIOS has been set to the Video Expansion mode, then the system will try to re-size (enlarge) the VGA image to fill the XGA display.
- The screen is not the same resolution as your original; i.e., you had an SXGA+ panel and it was replaced with an XGA. This would make all of the icons and text sizes slightly bigger but I don't think you'd see individual pixels (unless your eyes are REALLY good ).
- The system speed has been throttled down. You can check the CPU speed by right-clicking the My Computer icon and choosing Properties. Bottom right part of that popup window should show the current CPU speed. The system speed can be controlled by the power schemes in the Power Manager settings - check them to see if Maximum Battery has been selected.
- The shop that did the work accidentally installed some virus / malware on your system which might account for the slowness.