Question about IBM ThinkPad T42 Notebook
I can hear the fan spinning, the power light and the light that shapes like a Z in a circle is on but there is no signal on the screen, when I press the power button the computer turns off, when I press it again it turns back on but no signal on the screen.
Could you please suggest what could be the cause of the problem and what could the solution be.
Have you tried plugging an external monitor into the VGA connector on the back? This would narrow down the problem to either the video card/motherboard or the LCD display itself.
There are several possible defects- as above, the display, motherboard component, video section.
Also, first check the LCD/CRT switching function. On many laptops, there is a function (FN) key which is pressed at the same time as one of the number/function keys (the uppermost row of keys), and this combo will switch display from LCD to CRT & both.
Posted on Feb 28, 2008
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Posted on Jan 02, 2017
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