I complied it and it was successful , but when I tried to open the editor it didn’t start so I checked task manager to see if its launching … and it launch it gets 50% CPU Usage and 500MB of ram and then it just stop and disappears from the task manager.
Could it be because of my bad laptop graphics card ? Intel hd graphics here 
… unreal engine 3 ( udk ) was running cool back then.
Yes, could it be. You have to remember that UE3 requires less hardware power than UE4. Things change.
It barely runs on a new 27" iMac, luckily I just got a GTX 770 video card, so I’m good on my windows machine!
Yeah!! It’s almost everything about the GPU. CPU is a very important thing that you should have, but it’s nothing without a GPU.
Then I guess its time to get a new laptop
Seems that the Intel HD doesn’t support all the new stuff from UE4.
Even on my GTX 770 i can notice some little fps drops in big (or maybe just bad designed) scenes 
lol … but not even launching ?? how shocking … im a programmer so I don’t have big scenes
Is this on a mac? I had this problem on my macbook pro. Mac editor crash on editor launch - World Creation - Epic Developer Community Forums
Check out the link provided by MichaelT - that totally solved my mac editor crash problems.
Is momentarily working on my pc with a Intel HD 4600, the editor runs at 9-10fps but I can play with it.
I tried it on another pc with the HD 3000(I think) and it crashes after launch. That’s fair, we are using a next gen engine made to last years, this is only the beginning.
Michael posted the following on the AnswerHub
*You can download a patch that should solve this problem from http://cdn.unrealengine.com/qfe/QFE-FromCL-2027741-Shelve-2030404.zip
This zip file contains an installer that will update the engine.
lease note that this is just a quick fix so you don’t have to wait for 4.0.2 release. As such, it’ll be removed if you use Verify Install option in the Launcher.*
You can see the original AnswerHub posting here:
Sorry for any inconvenience that this may have caused!
I know its kinda fair …
But at least let us run the engine with dx9 
You’re awesome guys. Never saw so much dedication and customer support for Unity…
Edit: The patch works like a charm. And my fans don’t going nuts now , when I launch UE4. 