Hello and welcome,here are the steps...
This infection family will also hide all the files on your computer from being seen. To make your files visible again, please download the following program to your desktop:Unhide.exe
Once the program has been downloaded, double-click on the Unhide.exe icon on your desktop and allow the program to run. This program will remove the +H, or hidden, attribute from all the files on your hard drives. If there are any files that were purposely hidden by you, you will need to hide them again after this tool is run.
Please follow our Removal Guide here Remove System Check
After reading how the malware is misleading you ...
You will move to the Automated Removal Instructions
After you completed that, post your scan log here,let me know how things are.
The log is automatically saved and can be viewed by clicking the Logs
tab in MBAM.
Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
Also the other tool log.. A log file named TDSSKiller_version_date_time_log.txt (i.e. TDSSKiller.220.127.116.11_27.07.2010_09.o7.26_log.txt) will be created and saved to the root directory (usually Local Disk C:).
Copy and paste the contents of that file in your next reply.