LAPTOP FORUM

> Model: IBM Thinkpad 600X Type 2645-4EG
>
> Symptom: Will not POST/Boot
>
> When the machine is turned on the fan starts, the battery led is green
> and the other indicator LEDs light for 2 seconds after which the
> hard disk in use and power on indicators remain on and the fan
> goes to idle and thats it - nothing else, no sound of hard drive
> activity and nothing on the screen.
>
> I have tried with various components removed e.g.. CDROM drive, HDD,
> extra memory, modem card etc.. to try to narrow down the problem but
> no luck. I have also replaced the CMOS battery and used the reset
> button.
>
> The main battery is good, no passwords are set and no keys are stuck
> down (as far as I can see).
>
> There are NO beep codes.
>
> It looks like a mainboard/CPU failure to me.
>
> Anyone got any ideas??
>
>
> Martyn
>
> ~~~~~reply to: info at onecal dot co dot uk~~~~~

> Will it boot from a Windows rescue diskette?

> Remove nospam from return address.
>
>

> Dennis Pogson wrote:
>
>> Will it boot from a Windows rescue diskette?
>
>
> No same symptoms
>
> Have you tried another HD?
>
> Yes same symptoms
>
>> Remove nospam from return address.
>>
>>

> Martyn wrote:
>
>> Dennis Pogson wrote:
>>
>>> Will it boot from a Windows rescue diskette?
>>
>>
>>
>> No same symptoms
>>
>> Have you tried another HD?
>>
>> Yes same symptoms
>>
>>> Remove nospam from return address.
>>>
>>>
>
> Have you checked the memory is seated correctly/cleaned contacts?
>
> Exchanged for known working memory?
>
> Pete

> Pete wrote:
> > Martyn wrote:
> >
> >> Dennis Pogson wrote:
> >>
> >>> Will it boot from a Windows rescue diskette?
> >>
> >>
> >>
> >> No same symptoms
> >>
> >> Have you tried another HD?
> >>
> >> Yes same symptoms
> >>
> >>> Remove nospam from return address.
> >>>
> >>>
> >
> > Have you checked the memory is seated correctly/cleaned contacts?
> >
> > Exchanged for known working memory?
> >
> > Pete
>
> Yes same symptoms

> In article ,
> Martyn wrote:
>
>> Pete wrote:
>> > Martyn wrote:
>> >
>> >> Dennis Pogson wrote:
>> >>
>> >>> Will it boot from a Windows rescue diskette?
>> >>
>> >>
>> >>
>> >> No same symptoms
>> >>
>> >> Have you tried another HD?
>> >>
>> >> Yes same symptoms
>> >>
>> >>> Remove nospam from return address.
>> >>>
>> >>>
>> >
>> > Have you checked the memory is seated correctly/cleaned contacts?
>> >
>> > Exchanged for known working memory?
>> >
>> > Pete
>>
>> Yes same symptoms
>
> Mine was broken also until I removed one of the two RAM modules. One of
> the slots had died for some reason. Neither RAM module would work in it.
> So Im using the 128M module in the good slot and all is AOK.
>
> I tried all possible combinations until I found that if you left a
> module out of one slot, the machine worked. Beats me why the slot died.
> It might be even something as mundane as an intermittent solder joint,
> but Im not playing with it.
>
> Al