Slow Shut Down

My computer is shutting down very slow. How can I fix this? Thank You


Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i5-2390T CPU @ 2.70GHz, Intel64 Family 6 Model 42 Stepping 7
Processor Count: 4
RAM: 8174 Mb
Graphics Card: AMD Radeon HD 6450, 512 Mb
Hard Drives: C: Total - 942205 MB, Free - 888840 MB; D: Total - 11560 MB, Free - 1078 MB;
Motherboard: PEGATRON CORPORATION, 2AC2
Antivirus: Norton 360, Updated and Enabled