System Restore Error

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 8.1, 64 bit
Processor: Intel(R) Pentium(R) CPU 2020M @ 2.40GHz, Intel64 Family 6 Model 58 Stepping 9
Processor Count: 2
RAM: 12167 Mb
Graphics Card: Intel(R) HD Graphics, -1984 Mb
Hard Drives: C: Total - 714646 MB, Free - 687183 MB; E: Total - 60931 MB, Free - 51897 MB;
Motherboard: TOSHIBA, Portable PC
Antivirus: Windows Defender, Enabled

System Restore isn't working. I get an error message in the event log:

"C:\Windows\system32\SystemPropertiesProtection.exe
Regular
0x80042302"

What does this mean? How can I fix it?