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I am kind of new to Minecraft. I have played a couple of times on my Acer PC, but today there was a "Fail to Start Game" error. Are there any fixes to this problem? Help is greatly appreciated!

Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem; Failed to start game
A full error report has been saved to C:\Users\tak41\AppData\Roaming\.minecraft\crash-reports\crash-2013-02-02_09.26.14-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash

--- BEGIN ERROR REPORT b7ede8af --------
Full report at:
C:\Users\tak41\AppData\Roaming\.minecraft\crash-reports\crash-2013-02-02_09.26.14-client.txt
Please show that file to Mojang, NOT just this screen!
Generated 2/2/13 9:26 AM
-- System Details --
Details:
Minecraft Version: 1.4.7
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_09, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 428258648 bytes (408 MB) / 518979584 bytes (494 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
LWJGL: 2.4.2
OpenGL: ATI Mobility Radeon HD 4250 GL version 3.2.9756 Compatibility Profile Context, ATI Technologies Inc.
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
java.lang.RuntimeException: javax.imageio.IIOException: Can't create cache file!
at atq.<init>(SourceFile:61)
at net.minecraft.client.Minecraft.a(SourceFile:245)
at asq.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:515)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.imageio.IIOException: Can't create cache file!
at javax.imageio.ImageIO.createImageInputStream(Unknown Source)
at javax.imageio.ImageIO.read(Unknown Source)
at atq.<init>(SourceFile:56)
... 4 more
Caused by: java.nio.file.AccessDeniedException: C:\Users\tak41\AppData\Local\Temp\imageio7960194763280588072.tmp
at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(Unknown Source)
at java.nio.file.Files.newByteChannel(Unknown Source)
at java.nio.file.Files.createFile(Unknown Source)
at java.nio.file.TempFileHelper.create(Unknown Source)
at java.nio.file.TempFileHelper.createTempFile(Unknown Source)
at java.nio.file.Files.createTempFile(Unknown Source)
at javax.imageio.stream.FileCacheImageInputStream.<init>(Unknown Source)
at com.sun.imageio.spi.InputStreamImageInputStreamSpi.createInputStreamInstance(Unknown Source)
... 7 more
--- END ERROR REPORT fe66a39f ----------

Quote from Berwout

Try run it as administrator?

How do I do this? Sorry, I am kinda new

Caused by: java.nio.file.AccessDeniedException: C:\Users\tak41\AppData\Local\Temp\imageio7960194763280588072.tmp

Something's wrong with your permissions / user profile....