Bs3.dll is related to the BookedSpace adware, used to display
pop-up advertisement.
These instructions is related for bs2.dll, bs3.dll and rem00001.dll
#####
# Instructions:
#####

1. Click start, choose 'run'
2. Type 'cmd' - You should now have a DOS-commando window open.
3. Type cd "%WinDir%\System"
4. regsvr32 /u "..\rem00001.dll"
5. regsvr32 /u "..\bs2.dll"
6. regsvr32 /u "..\bs3.dll"
7. Click start, choose 'run'
8. Type 'regedit'
9. Find the key
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
and delete the entry 'BookedSpace' (BS2 variant) or 'Bsx3' (BS3 variant).
10. Reboot your computer
11. Delete the 'rem00001.dll', 'bs2.dll' or 'bs3.dll' file in the Windows folder.
12. Click start, choose 'run'
13. Type 'regedit'
14. delete the key
HKEY_LOCAL_MACHINE\Software\Remanent or HKEY_LOCAL_MACHINE_Software\BookedSpace

来源：https://www.jb51.net/hack/75188.html
免责声明：如果侵犯了您的权益，请联系站长，我们会及时删除侵权内容，谢谢合作！