I'm on Windows 7 and get a blue screen of death with the message irreversible hard drive error. I ran ccleaner, malware and virus scan and did system restore. When not being blue screened the computer works fine and no files are lost. My last blue screen was two days ago when I clicked on FB notifications. Now my computer works fine. Should I continue to worry about this or was this a temporary problem that went away when I ran cc cleaner, malware, virus and system restore?