Windows Update not updating

A buddy of mine is trying to update his new Lenovo ThinkPad laptop. It downloads the update, then restarts normally to attempt to install the updates. Once the system restarts, it boots to the update screen and attempts to configure the updates for the OS. Once it gets to about 15%, it says the the update failed to install, then reverts to the original configuration. It does this twice, then finally boots straight to the normal OS and allows log-in. Any reason as to why it may do this?

Here's the TSG Sysinfo log:

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Professional, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz, Intel64 Family 6 Model 58 Stepping 9
Processor Count: 4
RAM: 5737 Mb
Graphics Card: Intel(R) HD Graphics 4000, -1984 Mb
Hard Drives: C: Total - 695901 MB, Free - 636034 MB; Q: Total - 17999 MB, Free - 6285 MB;
Motherboard: LENOVO, 3254AH2
Antivirus: AVG Anti-Virus Free Edition 2013, Updated and Enabled