Firstly, I am having a virus problem... well i believe its a virus. Everytime i open Google Chrome or Internet Explorer it auto opens www.searching.com! I did abit of research and follwed the steps to fix the problem but it still comes up. I changed my google start page to http/google.ca/, and i went to the Google Chrome shortcut and changed the "Target" section to http/google.ca/ like the website said, this temporarily fixes the problem untill i restart my computer and it sets the "Target" section back to the www.searching.com URL. Im just totally stressed out and no matter how hard i try i cannot find a 100% working solution to the problem. Secondly, As for the question about my PSU. I have a Thermaltake TR2 500w PSU, and on the back there is a little red switch that you can select 115 or 230. What exactly does this do and what should i leave it on. I was having problems with my harddrive for awhile when i had it switched to 230 but now that i have it put on 115 its working again. I dont know why this fixed the HDD problem. Hopefully this will permanently terminate the HDD problem and it wont happen again.