What process is eating memory? You can find this in task manager, sort by memory column.
The task manager is not showing that process. The biggest consumer is svchost.exe and it takes around 160k witch is not 16GB i think. Some friends told me it might be a virus, so i'm looking into that. So far MS Security Essentials and Malwarebytes are finding only cd-key generators and patches and i'm deleting them, but no luck. I'll try Memtest86 and get back with the results.