Setup crashed after unexpected load shedding

I just downloaded Avast free antivirus for windows from http://www.filerabit.com/2016/01/download-avast-free-antivirus.html website. After download, when i was installing it in my Windows 7 (32 bit) PC but suddenly the power was gone because of unexpected load shedding. After light comes, i start PC and found only a desktop icon and nothing running in task bar or task manager.

I’m trying to reinstall with same installer file “avast_free_antivirus_setup_offline.exe” but it shows “Don’t send” error box.

Please someone help?

Don’t download from unofficial sites.

Utilize these download links:

Online installers (recommended):

http://files.avast.com/iavs9x/avast_free_antivirus_setup.exe

http://files.avast.com/iavs9x/avast_internet_security_setup.exe

http://files.avast.com/iavs9x/avast_premier_antivirus_setup.exe