The problem is the following friends had the PC connected to the charger, the charger makes the PC a short time ago, I turn it on and I get a message that says windows has failed please reinstall the system I take out the disk I test it on another pc and it runs well it doesn't give that error ... I try to take the memory from the pc that iso the short one and I put the good one that the test pc has started and this time it does not turn off when I return the ram memories to each pc now no starts only turn on and remain black screen and turn off the cooler

Did you clean the memories with a rubber or eraser before installing them back in place? sometimes doing this stupidity of cleaning them with a rubber works .. and make a cmos to the team disconnecting everything and removing the battery and leave it like that for a few minutes

What I would say are several things: In the first place, you did some tests ... that ... how to say it ... are unnecessary ... (but good for trying as well) secondly: you had a problem on a computer and you expanded it to two ... Third place: don't forget to put commas and periods when you write ... Fourth place: and now yes. Computers: I need to know what kind of computer we are talking about ... so they are laptops. If so, should you retell what the state is now, do you have two laptops the same? Neither works? One loader exploded ... the other? A priori, I would tell you that if the laptops have batteries, take them out and always try the charger that works ... then, I would tell you to test the memories one by one to see if any work ... Tell us how it went ...