Last night I received notifications from my computer that indicated my C drive was full. I thought it was strange, because there was no way I could've used up the 100+GB I had left on it. I went ahead and deleted some games, leaving me with at least 40GB and thought it would take care of the problem. This morning, my C drive was full again, and I could barely delete items in time to download and install Malwarebytes. My HHD is partitioned into two sectors, C and D, with 465GB for each. Only the C partition seems to be infected.
I use AVG for general anti-virus problems, but I'm guessing it didn't catch whatever's causing the problem this time. This only recently became an issue in the last few days, and I haven't downloaded anything sketchy in that time (to my knowledge). I'm the only one with access to this desktop.
Current computer specs:
Running on Windows 7 Ultimate
Service Pack 1
Processor: AMD Phenom 9850 Quad-Core Processor (2.50 GHz)
Installed memory (RAM): 6.00GB
System type: 64-bit Operating System
Any help would be greatly appreciated.