Windows 7 Recovery virus error

Hi there, Since MS Windows 7 was installed on the laptop, MS Windows 7 Recovery from Virus was downloaded this weekend. However, after the installation all photos, programs and documents were hidden.
I tried to Google the solution and an expert suggested the use of Grindsoft Trojan Killer in a forum. The Killer was downloaded and most importantly it worked fine. All hidden photos, programs and documents were shown again.
Then I tried to run Windows Restore. The date before the virus attack was set and hoped that the laptop could be restored to normal just like MS Windows 7 Recovery was never installed. It seemed that everything was working properly.
However, Microsoft website could not be accessed so that any MS Windows Update were not downloaded. The error code was ‘80070005’.
Does anybody have any suggestion for this error? Thanks in advance.
