My unity always crash

i’m already search entire web tried to reinstall uninstall using cc cleaner delete everything unity folder downlaod the older version usind Dx11 but still crash on opening . it was fine until i tried to import the controller and it crash then it crash whenever i open it even i delete the project folder use ALT to create new project i don’t know why too and it been nearly a month now :"( god plz help me this is my error log.please help me i am so desperate right now T__T

Unity Editor [version: Unity 4.3.4f1_e444f76e01cd]

Unity.exe caused an Access Violation (0xc0000005)
in module Unity.exe at 001b:0060ff20.

Error occurred at 2014-05-01_222956.
D:\Code tools\Editor\Unity.exe, run by HOK.
54% memory in use.
3328 MB physical memory [1518 MB free].
0 MB paging file [0 MB free].
2048 MB user address space [1306 MB free].
Read from location 00000000 caused an access violation.

Have you reported this with the Crash Reporter?

Already but there is no reply yet

I already send them 4 time and this has been 1 month already :cry:

plz anyone help me :frowning:

Start Unity from the file in Program Files folder and not the schortcut. Then when you are in disable the Open Project screen when loading because that is why you cant start Unity without crashing.

" disable the Open Project screen " by that do u mean holding alt button ?

im already try to open using Alt button and open a new project but is still not working