I don't know what i downloaded and im the only who can use administrative rights to my computer. i recently i realised i can't open my google chrome it sais Google chrome cannot read and write to its data directory. i dont know what google wants me to do? now i realise i cant even open my firefox either. I have windows 7 hp pavilion dv7 Notebook PC AMD Turion(tm) dual core mobile m520 2.30GHZ 64 bit OS. Advice is greatly appreciated.