Question After replacing the thermal paste, the laptop starts for 3 seconds and then turns itself off.

[sempak]

Hi. I'm cleaning my 14-year-old laptop for the first time and changing its thermal paste.

Edit: The CMOS battery has been dead for a long time and it's soldered.

 

[rgd1101]

how do you know is the cmos battery and not something you did when you clean the laptop?

 

[sempak]

how do you know is the cmos battery and not something you did when you clean the laptop?

I'm just giving information that the CMOS battery has been dead for a long time now."