My hard drive fills up to within 5 GB of capacity without me taking any action. I run disk check and everything is fine until the next time I turn on the computer and the disk is full again. I ran a couple of malware tools and they found nothing. When I look through the directories I cannot find any huge files. I have the hidden and system files set as viewable. The HD is 300GB and has about 35 GB of real files. Any ideas would be appreciated.