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Re: laptop will not turn on
It seems that you are out of luck. If the power cord does not fix it, the next possible cause would be the main board. Unfortunately, those are usually expensive. If i was in your shoes, I would try to return the power cord and invest the money in a new computer.
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The half moon usually means the computer is in SLEEP MODE. Normally, pressing the spacebar will wake the computer up but I have noticed that sometimes, the computer can get "stuck" in sleep mode. If that is the case, you can hold the power button down (until the power turns off and the moon disappears). Wait a few seconds then hit the power button again to turn the laptop back on.
This is caused by a component fault. The culprit is usually the memory card slot. The design of the laptop is bad. The Memory modules rest on the door. This causes (after some time) the slot to develop cracks in the soldier points. The fix is to get a new board or try to soldier it yourself. good luck
I don't think the T30 has an actual physical switch for the wireless. The ThinkPad button will show you how to do the wireless setup/repair. If you have Bluetooth on it, the Bluetooth indicator should be near the hinge.
you need to be techy on this one. you need to open the laptop. before you do that, be sure to remove all source of power (ac adapter and battery). press and hold the power button to drain all excess power. check the motherboard and reseat the CMOS jumper. it looks like a tiny pin. after reseating the jumper, reconnecting power and turn on the laptop.