accidently uninstalled driver for startup menu

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) Pentium(R) CPU B960 @ 2.20GHz, Intel64 Family 6 Model 42 Stepping 7
Processor Count: 2
RAM: 2980 Mb
Graphics Card: Intel(R) HD Graphics Family, 1298 Mb
Hard Drives: C: Total - 285143 MB, Free - 229816 MB;
Motherboard: Dell Inc., 01HXXJ
Antivirus: PC Cleaner Pro, Updated: Yes, On-Demand Scanner: Disabled

i was trying to clean up control panel and accidentally uninstalled something that made my start up menu disappear