Hi, so I tried different version of forge and none of them ever worked but I'll focus on 1.12.2. I've a good laptop, a msi that I bought almost 1 year ago (8go ram). I downloaded forge and installed it by following a lot of tutorials on youtube but when I launch the game, it always crash. I uninstalled minecraft, java and forge with revo uninstaller, I deleted the .minecraft folder several times and reinstalled all of them but it keeps crashing. Moreover I can't access to the log/record of the crash (the error message simply don't show the button "see crash report"). I updated my graphic card, tried to allocate more ram to forge version, tried to change the file's name etc but nothing work. I watched almost 15 different tutorials on youtube, checked almost all forum's topic that talk about this problem but it just don't help, so you're my last hope.

 

You can find the logs and crash reports by looking in the minecraft game directory, which you specify in your installation, or the default would be C:\Users\<USERNAME>\AppData\Roaming\.minecraft

 

Where did you download forge and your mods? Youtube has some userful information here and there, but it is also a cesspool of misinformation and bad crap. If you downloaded forge from ANYWHERE but here, or downloaded mods from anywhere besides the authors direct website, or from curseforge, I would delete them all and download them from the legit locations.