HP Envy 20-d034 Touchsmart All-In-One desktop PC, 500GB HDD.
Started getting pop-ups about low disk space. Did disk clean up, unchecked indexing, checked compress disk, defragged, deleted unnecessary files, moved other files to external drive. Ended up with around 45% free space.
Next day got more pop-ups about low disk space. Tried to run Webroot, found it wasn't running due to not renewing Geek Squad service contract. Tried to uninstall & install AVG Free. AVG wouldn't run due to other antivirus running.
After many attempts to uninstall Webroot from their sites suggestions, finally removed it from computer, I hope.
Tried to run AVG again & got pop-up about AVG not able to scan due to low disk space.
After running WinDirStat, it reported that over 357GB of space was being used by unknown programs/files etc..
Every time something on C gets deleted, most of its freed up space ends up in this unknown category.
Any suggestions/ideas? Should I treat this as a virus/malware?
Thank You in advance for taking time to look into this... ed