Get this error when trying to reinstall Windows Defender. Defender does not work on this laptop. Get the following error Application failed to initalize: 0x80070006. The handle is invalid.

Do you already have it installed on your machine ?
If so you need to completely remove it first.

I tried to delete it and get an error message. Invalid Drive E:\

This computer did have malware and may still have it.

In that case time to get another scanner.
Give Malwarebytes.
It's free and available here: Malwarebytes : Malwarebytes Anti-Malware PRO removes malware including viruses, spyware, worms and trojans, plus it protects your computer (http://www.malwarebytes.org/products/malwarebytes_free)

In that case time to get another scanner.
Give Malwarebytes.
It's free and available here: Malwarebytes : Malwarebytes Anti-Malware PRO removes malware including viruses, spyware, worms and trojans, plus it protects your computer (http://www.malwarebytes.org/products/malwarebytes_free)

Running now, has not found anything in the 20 minutes that it has been running. Suggestions for a "free" virus protection. Wanted to use the Microsoft product, but still getting the E:\ drive error.

Your wish...
Avira Free Antivirus - Download Best Antivirus Software (http://www.avira.com/en/avira-free-antivirus)

Your wish...
Avira Free Antivirus - Download Best Antivirus Software (http://www.avira.com/en/avira-free-antivirus)

Thanks.

When I ran the Malewarebytes program it did not find anything, however, I was then able to load the Microsoft Security Essentials. Should I delete the Malwarebytes program, or is it okay to have it and Essentials running?

Not sure why the drive E:\ error message went away, but it did.

Thanks for your assistance.

They do different jobs.
It's fine to have both installed, but only run one at a time..