Good evening, Yesterday my IBM T42 unexpectedly turned itself off. Since then every time I try to turn it on it comes on for a split second before switching off again. I have been trying to to turn it on with the powercord in. I recall that it did not make the warnign noise before it switched off to say the battery was dead, it just turned off.
Re: T42 Turns on for a split second then turns off.
OK. What you can do is to take out the battery then the HDD the plug in the unit and try to start it If is doing the same thing definitely you got a bad SODIMM. If you have two of them try removing one and another to see which one is bad. When you take out the HDD and memory remember to dismantle battery first and disconect the main. This is the way to avoid damaging your memory and HDD
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This indicates a hard drive problem, have it tested to confirm, because the hardware may need to be replaced. First try and reload windows with cd installation disc if that does not work the hard drive must be suspect.
You can test the computer this way. Connect the video output at the back of the laptop's base to a known working monitor. If the problem disappears completely then you know it is a screen problem, mostly likely. But if the same thing happens with the known working monitor connected to the Thinkpad, then you very likely have the BGA problem, a part that was soldered less than well (due to the restriction of lead not being allowed in the solder due to government regulations). And it may also be caused by flexing the base due to moving the laptop with poor support for its weight and resulting motherboard flex on rather delicate microsoldering. There are several services that "reball" the Ball Grid Assembly, and there are motherboards available as well that can replace the non-working ones. This is not a cheap fix to undertake but it can be done.
There's no hardware switch to activate and deactivate the wireless networking, but pressing Fn and F5 brings up a menu that allows you to turn Bluetooth on/off, WiFi on/off or both. It seems like IBM isn't satisfied with standard toggle buttons like other notebook manufacturers - even pressing the Fn and F7 buttons to switch between internal and external screens, brings up a menu with multiple display settings and resolutions.
Hope this helps,
How far does it get on the boot process? Does it open the operating system completely before shutting down? Do you get any error messages, and does it go to a black screen stating Windos wasn't shut down properly? Answer these and I'll have a better idea of what's going on.
Also, have you changed anything lately? and, Did this just start happening out of the blue, or did something happen to cause this, ie... power failure, kicked the plug out, ran the battery completely dead, overheated, etc...?