registry key

I get the message " Please set the registry key HKLM\Software\Microsoft\.NETFramework\InstallRoot to point to the .NET Framework install location." What should I do?


Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: AMD FX(tm)-6100 Six-Core Processor, AMD64 Family 21 Model 1 Stepping 2
Processor Count: 6
RAM: 10014 Mb
Graphics Card: AMD Radeon HD 7450, 1024 Mb
Hard Drives: C: Total - 1413143 MB, Free - 1264083 MB; D: Total - 17264 MB, Free - 2157 MB;
Motherboard: Gigabyte, 2AC8
Antivirus: McAfee Anti-Virus and Anti-Spyware, Updated and Enabled