IBM t20 will not START ( X-POST)

My laptop suddenly refuses to start . I press the power button and the
power and HDD light flash for about half a second and then nothing.

The laptop was working perfectly . I did change the memory from 256Mb to
64Mb RAm just before this occurred. Both Memory chips where SODIMM 133
Mhz. I changed them backed same result. I guessed that the memory changed
may have caused the behaviour ,

The battery is fully charged and I have tried with battery, with battery
and charger in and without battery using only the charger - all same
result.

I have also rtemoved cmos battery for short period of time.

Next step is sledgehammmer unless anyone can provide another idea!

All help gratefully accepted with promises of free beer for the winner!

cheers

Dave

mail to dj2 AT Bigpond dot net dot au

DeeJ <> wrote in message
news:Nvb0b.42565$...

> My laptop suddenly refuses to start . I press the power button and the
> power and HDD light flash for about half a second and then nothing.

Thats not a symptom listed in the hardware maintenance manual for some reason.
ftp://ftp.pc.ibm.com/pub/pccbbs/mobiles_pdf/62p9631.pdf

> The laptop was working perfectly . I did change the
> memory from 256Mb to 64Mb RAm just before this
> occurred. Both Memory chips where SODIMM 133 Mhz.
> I changed them backed same result. I guessed that
> the memory changed may have caused the behaviour ,

Guaranteed to be what caused the problem.

You have got the sodimms inserted properly ?
The description is on P65

> The battery is fully charged and I have tried with
> battery, with battery and charger in and without
> battery using only the charger - all same result.

> I have also rtemoved cmos battery for short period of time.

> Next step is sledgehammmer unless anyone can provide another idea!

That should stop the initial flashing.

DeeJ wrote:

> My laptop suddenly refuses to start . I press the power button and the
> power and HDD light flash for about half a second and then nothing.
>
> The laptop was working perfectly . I did change the memory from 256Mb to
> 64Mb RAm just before this occurred. Both Memory chips where SODIMM 133
> Mhz. I changed them backed same result. I guessed that the memory changed
> may have caused the behaviour ,
>
> The battery is fully charged and I have tried with battery, with battery
> and charger in and without battery using only the charger - all same
> result.
>
> I have also rtemoved cmos battery for short period of time.
>
> Next step is sledgehammmer unless anyone can provide another idea!
>
> All help gratefully accepted with promises of free beer for the winner!
>
> cheers

Sure you didn't blow up part of the machine and/or RAM with ESD?

Is the memory seated correctly, in the correct slot(s)?

--
freeagent

% uname -a
Linux aurora 2.4.21-AURORA #1 Sun Aug 10 10:48:30 EST 2003 i686 unknown

Hi Rod

I agree - have searched and RTFM no symptons listed

Did note is stated it had 128 Mb on board ( don't think so) so will
remove all peripherals and try again - without memory it should at least
POSt and beep ( think I tried this with no success)

So looks like sledge hammmer is coming out of storage!


Thanks anyway


"Rod Speed" <> wrote in message
news:bhrkci$2gv53$...
>
> DeeJ <> wrote in message
> news:Nvb0b.42565$...
>
> > My laptop suddenly refuses to start . I press the power button and the
> > power and HDD light flash for about half a second and then nothing.
>
> Thats not a symptom listed in the hardware maintenance manual for some
reason.
> ftp://ftp.pc.ibm.com/pub/pccbbs/mobiles_pdf/62p9631.pdf
>
> > The laptop was working perfectly . I did change the
> > memory from 256Mb to 64Mb RAm just before this
> > occurred. Both Memory chips where SODIMM 133 Mhz.
> > I changed them backed same result. I guessed that
> > the memory changed may have caused the behaviour ,
>
> Guaranteed to be what caused the problem.
>
> You have got the sodimms inserted properly ?
> The description is on P65
>
> > The battery is fully charged and I have tried with
> > battery, with battery and charger in and without
> > battery using only the charger - all same result.
>
> > I have also rtemoved cmos battery for short period of time.
>
> > Next step is sledgehammmer unless anyone can provide another idea!
>
> That should stop the initial flashing.
>
>
>

I am having exactly the same issue with my A21M thinkpad. I had also
tried upgrading the memory, but IBM had sent me the wrong module.
However, for some time I was able to repeatedly press the power switch
and finally it would turn on. Even that does not work now.

Let me know if you work out a solution. I have also posted a request
on IBM discussion forum. Will post back if I get a resolution