I have a Sony Vaio Windows 7 laptop that is a couple of years old. I recently had my Norton protection end and I turned on the Windows Defender, but my computer has been running really slow and acting up. I have been getting a S.M.A.R.T. hard drive error when my computer starts as well. I tried restoring my computer to an earlier setting, but that didn't work. I don't know what to do, and I really could use some help. When I ran an error check on the c hard drive this is what it said: WDC WD32 00BEVT-26A23T0 SATA Disk Device volume: c/. So please if anyone can help me fix this problem or how to fix it that would be great!!