Picture Folder Problem

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 32 bit
Processor: Genuine Intel(R) CPU T2060 @ 1.60GHz, x86 Family 6 Model 14 Stepping 12
Processor Count: 2
RAM: 2038 Mb
Graphics Card: Mobile Intel(R) 945 Express Chipset Family, 256 Mb
Hard Drives: C: Total - 475438 MB, Free - 312740 MB; S: Total - 5376 MB, Free - 2065 MB;
Motherboard: TOSHIBA, IAKAA
Antivirus: Microsoft Security Essentials, Updated and Enabled

My picture folder suddenly stopped allowing me to create a new folder anywhere within the folder. MM