Everytime I open it, I get to the main screen after login and it freezes right after I log into my account. I can't move my cursor, I have to restart my computer. I have done this 3 times now and it freezes everytime. This hasn't ever happened before, but it started happening now. (I have played it since the new patch, but today it just started doing it.)
Amateur Master5 votesi'm on windows 7 and it freezes for like a full minute after i log in, then it's fine. the homepage screen is all black with the tab pages but then if i log out then try to log back in, it does the same thing. I already uninstalled and reinstalled the client and it did not help.
Itch3 votesRight click your league of legends .exe
properties compatibility hen you need to tick ' Run this computer in compatibility for: ' and choose whatever operating system you have.
This is how i stopped my computer freezing after login.
Up vote so people can see!!
(not sure if this works for windows 8)
Hank Dangler1 votesIt doesnt work for windows 8 i've tried
MegaDuck3 votesIn case anyone was wondering, I fixed mine by just leaving it sit. After a little bit it unfroze and so far I haven't had that problem again since letting it unfreeze.
DexterousFlip1 votesYeah, this worked for me :D. Just wait about 5-10min and it should unfreeze. If it doesn't, then you may have a different problem. Thanks anyways for the solution! Sorry Rito for blaming you, pls no ban meh 
DEmperor952 votesIt happened to me as well. I decided to wait, and after about 1-2 minutes it worked just fine (at least for me). The client said something like "Error detected, data is sent to Riot". Then I proceeded to play normally.
mrLSDman1 votesI might try that in a bit, I shut it off after about 1 after each time.
Skrulz1 votesDid it work?
twesplease1 votesRito*
Fried Noob2 votesSame thing happens to me (as well as league client never popping up after a game forcing me to restart. I just wait a few minutes and everything unfreezes.
ExVl2 votesThis is happening to me too :) after I patched to 5.5 and logged in it froze my whole computer for 10 seconds and then it logged into the game... same thing happened today. It just happens the first time I log in after a computer shutdown. Also images don't appear in the client after freeze.
PermanentDuck1 votesThis is happening to me too :) after I patched to 5.5 and logged in it froze my whole computer for 10 seconds and then it logged into the game... same thing happened today. It just happens the first time I log in after a computer shutdown. Also images don't appear in the client after freeze.
I also had the same exact problem, right now i'm waiting an hour or so before i try to log back into the client again
ExVl2 votesI am on Windows 7 so I think it is a client problem
Karn Bot2 votesI had the same thing it was super strange, I restarted a couple of times and I eventually just left it open and I haven't had a problem since
8bit2slow2 votesI am going to try to explain the way I see it: Computer freezes at the launch of league of legends to check some important data etc. While it freezes, let it freeze. It will stop being jammed. It only reads data, which happens to me most of times. However, sometimes I am lucky enough to not encounter this problem. There is a little actual problem for me, which is the news lack. What do I mean? Once my computer unfreezes all the news have just black pictures and only titles ex: Watch MSI Today! And without freezing it shows everything perfectly
Andesu 1 votesThe same thing is happening to me :(
mrLSDman1 votesbump
LiamManTheAngry1 votesSame thing has started happening to me to since yesterday morning. I'm using windows 8.1 and installed the latest update the night before I started experiencing this issue. Might be an issue with the latest update?
Uptown Girl1 votesThank god im not the only one this is happening too. After my computer updated to 8.1 league makes my whole computer freeze
DexterousFlip1 votesI am having this problem as well. I think it's the latest Windows 8 update too. Before Patch 5.5, it froze with the latest Windows 8 update. Riot, this has been going on for about a week now. Can you try and make Windows 8 work again ASAP. I wanna play the new Rift 
. Thank you.
Teridax1 votesI played 5.5 just fine, but after installing Windows 8.1's last update it began having this problem. I've tried compatibility mode, running as admin, uninstalling and reinstalling... and still the same problem. EDIT: I've also waited for several minutes and nothing happens, it simply remains frozen
MegaDuck1 votesI have the same problem
Bb Jesus1 votesI fixed it by updating my Java , :)
sycogonewako1 votesHas anyone tried uninstalling the last windows 8 update to stop the freezing?
ZeckeKlette1 votesSame problem here with WIn 7 64. The PC completes freezes for a couple of seconds. Hey, Sycogonewako, I've read that reinstalling the Windows patches of the last few days as well as the LOL client afterwards fixed this for a couple of people. I'll try that, too.
BlackRaven1 votesmine just worked but every single icon except the champion icon was black. i couldnt even see my own spells. come on riot..
Teridax1 votesI did a system restore as a temporary fix, but the windows update is forced again Didn't stay frozen as long as last time but now all icons remain black
Amateur Master1 votesGUYS I FOUND OUT HOW TO FIX IT I THINK. all you hafta do is go into the place where you installed league, should be riot games folder, find the league.launcher, then use that instead of the one it places on your desktop/start menu. it lets it load instantly and prevents the black screen overlay as well
Hank Dangler1 votesok but how do I get to that folder?
Amateur Master1 votesgo to my computer, C:\Riot Games\League of Legends should be in there. either there or the D drive or whatever drive you put it in :)
Epic Hamburger1 votesmy screen freezes but i can still move my mouse but I can't do anything else.
Itch1 votesRight click your league of legends .exe
properties compatibility hen you need to tick ' Run this computer in compatibility for: ' and choose whatever operating system you have.
This is how i stopped my computer freezing after login.
Up vote so people can see!!
Rig: Windows 7 x64 AMD FX-8350 8G Memory GTX 760 2G (GDDR5)
(not sure if this works for windows 8)
Nickiscrazy1 votesI have windows 8 and everythimg seems to take a long time to load i could be sitting at a screen that says Lolclient.exe is not responding for a good minute. But if i just leave it there it will come back. I have no in the game problems. Can someone help?