Super I/O chip, on/off pins

[LiquidCap]

One day while poking my probes around on a laptop's super i/o chip I discovered i can turn the laptop on/off by shorting the right pins. My question here is can this be done with every super i/o chip one every laptop?

Another question: Can this be done the same way with desktop motherboards also?

[RobRocks]

Re: Super I/O chip, on/off pins

Hello, the i/o chip offers different levels of power on, lets say power states, you can see this from the schematic, the s3, s4, s5 which will give power to certain ic`s. the s5 is the full power on, the other ones can be charging, standby and some other functions. By injecting 3.3v to the right pin of the i/o ic you activate the different levels, check the schematics für the right pins. But if the bios is damaged, even if you inject the voltage the screen will not come. Lets say you activate the s5 level and all voltages to all ic`s are there, if the bios or the i/o ic still has a problem, picture will not come.

[Francisco.s]

Re: Super I/O chip, on/off pins

shorting the right pins.

How to know the right pins?

can this be done with every super i/o chip one every laptop?

It is very difficult to say, there are so many different laptop.

[japlytic]

Re: Super I/O chip, on/off pins

Many chipsets have General Purpois Input/Output (GPIO) pins, of which use is at the discretion of the motherboard manufacturer.

[spidey]

Re: Super I/O chip, on/off pins

One day while poking my probes around on a laptop's super i/o chip I discovered i can turn the laptop on/off by shorting the right pins. My question here is can this be done with every super i/o chip one every laptop?

Another question: Can this be done the same way with desktop motherboards also?

Yes you can. Just check the schematic, your on/off button connected directly to the io chip.

[nevenne]

You can turn on the computer at the keyboard connector usually first 2 pins from the right side.https://www.youtube.com/watch?v=j8q4eEcKRDU