follow these steps :
1. reboot your computer and keep pressing F8
2. choose "safe mode"
3. when windows starts go to run type regedit.exe and click ok
4. go to HKCU/software/microsoft/windows/currentversion/run and delete suspicious programs
5. go to HKLM/software/microsoft/windows/currentversion/run and delete suspicious programs
6. if you find a suspicious program from step 5 or 4 then note its folder and go to it and delete it
7. boot up to normal windows and then it won't run the RAT at the startup so you should be ok