got the latest version of comodo system cleaner

when i use the new system cleaner and power clean with malicious entries and restart it boot fine and all, but when i finished all the process and boot up again my disc drive don’t show in my computer and seem like erase the drivers.

Please post us the logs for each cleaner module(CRC, CDC, CPC and CSC) in order to analyze them and find the possible source of your problem.
The logs can be found in the installation folder of Comodo System Cleaner(\ProgramFiles\COMODO\Comodo System Cleaner).
We also need to know what is your operating systems and whether is 32 or 64 bits.

Meantime, you can try to restore the backup that CRC performs before cleaning starts. Go to CRC module, click on the Backup tab, right click the backup item and choose Restore. Click OK when the confirmation window is displayed. After this, check again for your disk drive(s).

Thank you for your support.