"Disk Drive Security" software lock my PC drive not open

Hello,

i install "Disk Drive Security" software in my PC that is trial version software for one month, at that time i lock one of my drive by that software so trial period is over but my drive is lock, i uninstall the software but my drive is still hide, when open my PC drive message comes "Access is Denied" please help me its urgent ,,, how to open my drive.... please help soon