Recently I've installed another game on my computer, and since then, LoL won't open properly. When I click the shortcut, the launcher opens without any problems, but after I click play, nothing happens. I get no error or login screen whatsoever. If I click play, and quickly look at my task manager, it says under processes: LoLclient.exe and under description: Adobe air debug launcher. This process closes after a few seconds.

I have tried everything I thought would work, uninstalling and reinstalling LoL, repairing LoL, Reinstalling directx, reinstalling Adobe AIR.

If anyone can help, please, I don't know what to do anymore.

EDIT:
I've found a solution! Try to uninstall LoL, and afterwards, check if your Riot Games folder is still there. if it is, some folders are broken. to fix this, reinstall LoL, but install it to another location (you can do this in the setup.). It should work after this.

Same thing happoned to me.
LoL worked when i had Windows 7 and now it doesent work when i got Windows XP.
If any1 can help pls do

Thx in advance.

same problem here..

yeah, i played LoL yesterday and when i woke up this morning it didnt work

Same problem here :/

Experiencing the same thing right now

Not solved so `Bump`

still no solutions, bump again

i cant too!! ! !!!!BUMP!!!!