I have difficulty opening MS Word, Excel, etc. I noticed that 30 GB of memory was missing since last week. I ran Malwarebytes, found nothing, Kaspersky deep scan, found nothing. I downloaded nothing. But, last week, I compressed some documents. I thought this would make more space. Operating any program is time consuming. How do I find out what happened?
Why did 30 GB of space disappear from C drive in less than one week?