All modpacks crashing at the Mojang Screen!

[Jacob4112]

Title: All modpacks crashing at the Mojang Screen!

Version: 1_0_3

OS: Windows 7

Java Version: Java 6

Description of Problem:

Every single modpack loads, but does not load and crashes at the orange Mojang!

Error Messages:

Here's a java error I got from Tekkit Classic-

# http://java.sun.com/webapps/bugreport/crash.jsp

#

--------------- T H R E A D ---------------

Current thread (0x00000000004b0000): ConcurrentGCThread [stack: 0x000000004f180000,0x000000004f280000] [id=2184]

siginfo: ExceptionCode=0xc0000005, reading address 0x0000000000050015

Registers:

EAX=0x0000000000050005, EBX=0x000000004f27fab0, ECX=0x0000000000050015, EDX=0x000000004699ed30

ESP=0x000000004f27f6f0, EBP=0x0000000000000041, ESI=0x000000004699adb8, EDI=0x000000004f27fab0

EIP=0x000000006d91233b, EFLAGS=0x0000000000010246

Top of Stack: (sp=0x000000004f27f6f0)

0x000000004f27f6f0: 00000000004872f8 000000006d913271

0x000000004f27f700: 000000004f27f790 000000006dc024b5

0x000000004f27f710: 000000004f27fab0 000000006db9ceb0

0x000000004f27f720: 0000000000000001 000000006db0adce

0x000000004f27f730: 000000004699ac38 000000004f27fab0

0x000000004f27f740: 000000004f27fa60 0000000000000000

0x000000004f27f750: 000000004f27fa60 000000004f27f810

0x000000004f27f760: 000000004699abb0 000000006d906113

0x000000004f27f770: 000000004f27fab0 000000004699a768

0x000000004f27f780: 000000004699aa38 000000004699a898

0x000000004f27f790: 0000000046998200 0000000000000d80

0x000000004f27f7a0: 0000000000006c00 000000006d90ba7d

0x000000004f27f7b0: 000000004699aa28 000000004f27f810

0x000000004f27f7c0: 000000004f27fa60 0000000000000000

0x000000004f27f7d0: 0000000046998200 0000000000000d80

0x000000004f27f7e0: 000000000000007a 000000006d8e1ede

Instructions: (pc=0x000000006d91233b)

0x000000006d91232b: 4f 00 eb 04 48 8b 42 08 48 8d 48 10 4c 8d 43 58

0x000000006d91233b: 48 8b 01 ff 90 18 02 00 00 80 bb c8 00 00 00 00

Stack: [0x000000004f180000,0x000000004f280000], sp=0x000000004f27f6f0, free space=3fd0000000000000000k

Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)

V [jvm.dll+0x12233b]

--------------- P R O C E S S ---------------

Java Threads: ( => current thread )

0x0000000050054000 JavaThread "Image Fetcher 0" daemon [_thread_blocked, id=1124, stack(0x0000000051810000,0x0000000051910000)]

0x0000000050052000 JavaThread "AWT-EventQueue-0" [_thread_blocked, id=7864, stack(0x0000000051710000,0x0000000051810000)]

Error Log:

[Calvariae]

Does Vanilla Minecraft launch and run from the Vanilla launcher? Either way, update to the latest version of Java.