I have a 1TB internal SATA HDD in my desktop, but it is having some "mahhhhhaahhhahhhaajor" issues at the moment. For lack of a better way to describe it...space is disappearing from it. It's almost like something is eating it, like a virus/malware. I did a complete scan (twice) with CCleaner, Malwarebytes, and Spybot Search and Destroy, and everything returned as clean as a whistle. It is getting extrememly annoying because it's constantly telling me that my drive has no space left. As a result, I have to delete stuff or move it to an external drive in order to use my system on a daily basis. It is not a meg here and a meg there...I'm talking bout gigs lost. I have lost massive amounts of space and no idea where they're going or what's going on. According to some utilities, my drive is extremely active (presumably because it's swapping between RAM and HDD), but that's just an educated guess. My system includes: Windows 7 Professional (64-bit), AMD Athlon II x3 455 3.3 GHz CPU, 8 GB RAM, AMD Radeon HD XFX 6850 graphics card. Can someone please shed some light on this. I'm starting to worry that this is a security issue for my house, and thus have disconnected it from the network and homegroup. I have a fair bit of computer knowledge (currently studying it in college) and it's my entire background, but I'm in way over my head with this. I've tried going through the registry and that didn't turn up anything uber suspicious (and i dare not **** with it too much because i know what can happen when you mess with the registry).