Hello. Recently (yesterday) I noticed my hard drive keeps making this constant whirring noise. So I checked the task manager and it shows the CPU usage and the physical memory consistently stays hovering around 50%. I've done multiple virus scans with Malwarebytes, Avast Free, Bitdefender 60 Second Scan, Norton Power Eraser & Kaspersky's tdsskill. The only one that detected something was Norton Power Eraser which was avastemupdate.exe and avastnm.exe. So I removed those items and the problem still persists. Another thing I've noticed is that I can't uninstall Firefox Light. This is the message I get every time I try to uninstall the program: Installer integrity check has failed. Common causes include incomplete download and damaged media. Contact the installer's author to obtain a new copy. More information at: http://nsis.sf.net/NSIS_Error Any help would be appreciated if anyone has any idea what's going on.