System.dll

File System.dll is malware or can be infected by malware:
Zango.Search.Assistant Adware, Matcash Trojan, Cinmus Trojan, 888Bar Toolbar, Matcash.dll Trojan, Lemonade.Tycoon Downloader, Malware Browser Helper Object BHO
You must run antivirus software as soon as posible to check you computer.Also Be Aware of this dangerous files:

base001.avd virus
xanjfzrc.dll Information
dealhlpr.dll File
File name npclntax.xpt
param32.ocx Cleaner