Installed registry cleaner, let it do its stuff,thought it had backed up but cant find back up now,--after this discovered "accessories" category in start menu disappeared(the accessories are there but not listed in start menu)did a system restore but still no accessories listing. Also tried to download TomTom home update but cant--tells me "Home runtime exe failed Error 0" Could this all be due to registry cleaner. 2 year old vista desktop. considering complete system recovery, is this only answer? many thanks.