SOURCE: IBM THINKPAD R52 KEYPAD RELATED PROBLEM
On most IBM laptops, in order to turn numlock on/off, you must press Shift + Scroll Lock. You can tell if numlock is on at-a-glance because a symbol that looks like an arrow pointing up with a "1" in its center is illuminated on the status light display located near the power button.
SOURCE: IBM ThinkPad R52 PC Notebook display problem
Hi , connect a external display monitor, re run your laptop, if same remove the battery and use the ac adaptor. if the same something wrong on your mainboard, check with your supplier.
SOURCE: Sound problem
Go to control panel,and check device manager to see if you have any problems. If not, click on Hardware and Sound, then on Sound, and see if somehow your laptop speakers have been turned off. Reconfigure them anyway, and test the sound there. If that doesn't fix it, go to IBM and reinstall Realtec. Sometimes it gets corrupted, and sometimes it takes more than one installation to get it fixed. Let me know if you have any problems.
SOURCE: Keyboard problem with IBM R52
Hold the blue fn key (function key) then press the numlk (numbers lock) this will enable or disable the calculator feature on the keyboard.
SOURCE: where is the wireless adaptor button on the IBM thinkpad R52?
press Fn & F5 same time, for 5 sec. this will activate the wirelesskey on your laptop.
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