Computer laptop Toshiba has lost the use of F6/F7 screen luminosity keys

HI - my daughter went on a charity site and since then, AVG Free reports the virus "win32/DH. FF840283' as being resident on the computer and the screen keys F6 and F7 light has stopped working. Further within the AVG review reveals that it is in with the utility hot key Toshiba. AVG continues to report warnings of virus being resident in this utility and screen brightness keys continue to not work. I tried restoring the system (in safe mode) which fixed the problem temporarily, but the virus came back. I tried to reinstall the hot key utilities and put the rogue named file in AVG admitted of exceptions. Again, F6 and F7 worked for a while and then stopped with the warning of viruses yet to come. Any ideas?

Hello

I suggest you to download and run the latest Microsoft security on your computer Scanner and check if it helps:

http://www.Microsoft.com/security/scanner/en-us/default.aspx

Note: the data files that are infected must be cleaned only by removing the file completely, which means there is a risk of data loss.

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