Question about IBM ThinkPad R51 Notebook

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R51 2887 NQ2 Thinkpad (not under warranty) not powering on. The problem appeared 3 months ago for the first time, but going through some forums, the problem got temporarily solved by removing the battery and repeatedly pressing the power button and then running the laptop on AC power without batteries. But now the laptop is recalcitrant to power on. I have tried changing the BIOS battery and powering on the laptop without the memory module and the hard drive. Without Success. I am disinterested in replacing the system board since I had the same problem in warranty and got the systemboard replaced but reappeared just after 4-5 months after replacement.

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  • Attesi Jan 24, 2009

    I have the same problem. I have 2 X R51 machines. 1 is showing the problem so I swapped the batteries, then the power adaptors. The first time I did it the bad one fired up OK, but the second time it was dead and has stayed that way. The good one is OK with either battery or power supply, the bad one is dead with either. I've tried holding the on button to drain the capacitors but no joy. Any ideas??

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First, the simple things need to be checked. Is the power supply line, from the wall socket to the computer input socket, in good condition. Best test is to try it on a known working Thinkpad or with a multimeter if one is handy.
Second, connect to an outside monitor to rule out faulty laptop monitor. If the known working monitor paired with the R51 works perfectly then you know it is your screen.
Third, does moving or flexing the computer by its base when running exacerbate the problem?

That will get some preliminary data.

Posted on Apr 18, 2009

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My switch also broke a while back, and this is a common problem with the slate 500 due to the construction of the switch.
This should help:

http://forum.tabletpcreview.com/hp-slate/41309-my-power-switch-just-broke-2.html

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Tdos't power on


check your DC connector:

Symptoms of a broken power jack
1. If you wiggle the power cord or the AC Adapter connector on the back of the laptop, the power LED and battery charge LED start to flicker.
2. Battery will not charge in the laptop.
3. Laptop runs fine off a charged battery.
4. With the AC Adapter connected the laptop appears to be dead.
No power LED or battery charge LED activity.
5. Laptop randomly powers off without any warning.

If your laptop is out of warranty, then you can fix the problem by re-soldering DC-IN jack on the system board. If it's still under warranty, it would be fixed at no charge to you.


If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response

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This is a problem particular to Lenovo Ideapads. I just found the answer in the Lenovo forums. The fix is simple & quick:

http://forums.lenovo.com/t5/IdeaPad-Y-U-B-V-and-Z-series/Game-keyboard-problem/m-p/298246/highlight/true

http://forum.lenovo.com/t5/IdeaPad-Y-and-U-series-Laptops/Typed-letters-appearing-as-increasing-numbers-0-1-2-3-4-5/ta-p/301034

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Im forget mein passport


f you cannot boot the ThinkPad, you will have to reset the IBM ThinkPad password via hardware.

If only the power-on password is set, do the following to remove the power-on password.

1. Power off the computer
2. Remove the DIMM cover on the bottom side of the computer.
3. Short-circuit the two password pads or put a jumper on the contacts to short the circuit.
4. Under the short-circuit condition, power on the computer and wait until the POST ends. After the POST ends, the password prompt does not appear. The power-on password is removed.
5. Reinstall the DIMM cover.

If both the power-on password and the supervisor password are set, do the following to remove the passwords:

1. Power on the computer by pressing and holding F1.
2. Enter the supervisor password. The Easy-Setup menu appears.
3. Click on the Password icon.
4. Click on the Power on icon.
5. Enter the supervisor password and press the Space bar.
6. Press Enter twice.
7. Click on Exit; then click on Restart.

Please rate my response.

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click on your dvd/cdrw to stop it. when it says it's safe, go ahead and remove the drive.

reboot

reinstall the drive and windows should automatically pick it up

also. go to --

Start -> Control Panel -> Power Options ->
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go to the Advanced tab and under power buttons --

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Oh and while you are there make sure the
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click apply and click ok and reboot

let me know if this works for ya

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i hope this info helps.

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