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[bobson]

I have maybe a stupid question:
Is it possible to change a processor in a laptop?
Currently I'm having an old Siemens-Nixdorf PCD-4. It has 486DX@ 50Mhz and I wold like to make it a little faster (486 100Mhz)
Is it possible?

[Quintopotere]

I'm quite sure that is possible!

You just have to control if the motherboard of the laptop support the 100 MHz processor.

[bobson]

Do you know how to check it ??
And is changing cpu as easy as in the normal PC ??

[DonCorleone]

When you still have got the manual that would be a start. If not: perhaps you can find something at the siemens-nixdorff page.
Another option -but I'm not sure at all- might be some analysis tool...

[bobson]

All I have found in manual about cpu:

CPU: SL enhanced processor
i486 SX, i486 DX2 or i486 DX4

I'll try to open the computer today and take a look inside...

Maybe there i will find a solution (or a problem :bleh: )

[The Fifth Horseman]

It really depends. Your laptop _could_ (emphasis on could) have an exchangeable CPU - then it's only a matter of getting a compatibile CPU.

If the CPU is integrated with the mobo (cause that how some laptops were built), you can experiment with overclocking it a bit - doubt that you'll manage anything too high, but you can acquire a 10-20% improvement.
Note, however, that the speed of the motherboard (most importantly, the FSB) can also cap out the maximum performance.

[win98]

Trie and increase the fsb first it will increase your speed.

[Bp103]

With 486's its usealy big I.C. soldered to the bored

so its relly hard to swap out. (if possible)

[bobson]

I stopped trying to improve the CPU in that laptop. I bought myself a new one with a Pentium 75. Still Siemens-Nixddorf PCD series.
Now I have a BIG problem. Not long ago in both laptops there i the same problem. When I turn them on it says "Keyboard stuck key failure"
I do not know what to do. I'd cleaned both keabords from inside, but it didn't helped.
I do not where is the problem in the keyboard or is it something wrong with the slot on Mainboard?
When the keyboard is torn out to parts, i hold the inside stuff, that no metal line on the plastic can touch another, everything is apart, but still connected to the laptop - there is still a error message "keyboard stuck key failure".
Only once or twice a day the laptop starts up with no error, but works only for about 10-15 minutes, then it starts writing down letters, usually multiple 't' or '[' until it hangs up.
I works just fine with external keyboard, but what is a laptop with external keyboard? How to use it outside of home?

If anyone knows, how to fix it, PLZ help :wallbash:

[win98]

Try playing round with those keys abit to see if you can fix it.