Old IBM ThinkPad 750c won't start

I have an old IBM Thinkpad 750c that has been gathering dust for many years. I remember it working fine the last time I booted it up (Windows 98).
However, now somthing with the power supply/power button has gone awry and it won't start.
What happens is, the display has 11 lights signifying different things (NumLock, Shift Key, Power, HDD etc.) With the power cord plugged in I get the Power Button to light steadh, and what I believe is the HDD light as well; though I'm not sure what this light represents. These two lights stay on steady.
I then slide the power button, found on the left side of the machine, toward the rear of the maching to turn the machine on - many other lights go on but the button automatically slides back to its original position, and then ALL the lights turn off - the original two and all hte others.
I get no boot. :(
I have created a video and posted it to YouTube to better explain what I am doing.
I'll gladly give points for the answer to why this is happening, or to someoen who can find the ORIGINAL DOCUMENTATION online that will explain this to me.
Thank you!
<object width="640" height="385"><param name="movie" value="http://www.youtube.com/v/qcvSA4fopAA&color1=0xb1b1b1&color2=0xcfcfcf&hl=en_US&feature=player_embedded&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowScriptAccess" value="always"></param><embed src="http://www.youtube.com/v/qcvSA4fopAA&color1=0xb1b1b1&color2=0xcfcfcf&hl=en_US&feature=player_embedded&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" allowScriptAccess="always" width="640" height="385"></embed></object>

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mythology8Asked:
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asiduConnect With a Mentor Commented:
Unable to see your video link.

>>> get no boot. :(          >>
Can you get the start up screen flash?

The first thing that you must get working right is to get the start up screen-flash working.

As explained by greg vander you must make sure the CMOS battery is in good condition.
Locate the CMOS battery and check if you are getting the 3V. If not you will need to replace the
battery with a similar type. For testing you could use a normal CR2032 which gives 3V but is not rechargeable.

Inspect the connecting wires they should be clean free from oxidation.

You should just work with the AC supply and remove the battery out of the laptop.
as suggested by LloydBunday.

Remove the CDROM, floppy drive and the hard disk and test to see if the initial screen-flash
appears.




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mythology8Author Commented:
LINK to YouTube Video:
<object width="640" height="385"><param name="movie" value="http://www.youtube.com/v/qcvSA4fopAA&color1=0xb1b1b1&color2=0xcfcfcf&hl=en_US&feature=player_embedded&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowScriptAccess" value="always"></param><embed src="http://www.youtube.com/v/qcvSA4fopAA&color1=0xb1b1b1&color2=0xcfcfcf&hl=en_US&feature=player_embedded&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" allowScriptAccess="always" width="640" height="385"></embed></object>
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Joseph GanSystem AdminCommented:
A similar problem happened to me in the past, that the battery may be discharged, so it could not boot. Try to recharge the battery first.
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LloydBundayCommented:
Hi
It does sound like a powere issue, laptops take their power from the battery or mains, if the battery is totally flat then it will try to put all the power into the battery and not to the laptop. Try removing the battery and then powering it on. If this works then a new battery may solve the issue. Having said all this, you have to make a judgement as to is it really worth it? Windows 98 is now well over ten years old and not supported. Unless you have a specific task for this machine it may be better to divert your energy into something more worthwhile.
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greg_vanderConnect With a Mentor Commented:
hi
could not watch the video at work but I know that old thinkpad can not work with a defective cmos battery. I bought a lot of for thinkpad 600 but I don't know if it the same model.
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Jackie ManCommented:
In our office, we do have two ThinkPad like yours, but I am on Easter holiday and can only check and compare with your symptoms against the normal status after the holiday.
In the meantime, I have just googled and find the following information which might be useful for you.
Symptom:-

No beep, power-on indicator, on, and a blank LCD during POST.

FRU / Action in Sequence: -

1. System board
2. DC/DC card
3. CPU card

Source: http://downloads.thinkpad-portal.com/ThinkPad_380_385_560_560E_760C_760CD_760E_760ED_760L_760LD_760EL_760ELD_760XL_760XD_765D_765L_770_SelectaDock_III/vol4hmm.pdf
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