"invalid digital signature" and "file curupt" when I open file

[russellhyldon]

Hi everyone,

 

Im having a total nightmare with my laptop, Ive had it for about a year and for some reason whenever I tried to download files/applications it would come up "curupt file", after a very long time trying to look for answers, i decided to save all my files and I used system restore and wiped everything off my laptop and restored the laptop to "factory settings".

After doing this I tried to download firefox and then "invalid digital signature" poped up underneath the download, so i ran the file anyway and "curupt file" appeared.

I tried downloading google chrome and the same thing happend, its happens to everything now that i try and download.

 

I could really do with some help on this as no one seems what I can do, also I was toled to try and download mulwarebytes, but everytime i try and download it the same things happens.

 

i hope someone can help me.

[RandyL]

Control Panel>Internet Options>Advanced

Scroll down to the Security section. There are four settings that relate to certificates and signatures.

 

Other then that it would have to be a third party program like an antivirus program.

[KenB]

Further to Randy's post.....

 

When you take a look at the security settings:

Check the one that starts "Enable software to run / install ....... signature invalid"