I noticed that sometimes after I log in to my computer after it's been asleep, the computer crashes. This happens a few times per week. When it does crash, it is preceded by about a minute of trying to bring up the windows desktop environment--after I wake up the computer and input a password or PIN to regain access. I haven't added any hardware. I have Malwarebytes (premium) and Windows Defender. (Malwarebytes is not registered in the Windows Security Center.) I taskmanager, I disabled Skype in the startup tab. I did run a scan with Malwarebytes and a full scan with Windows Defender. Do I have a lurking virus? Is there a corrupt file somewhere? (I did run the sfc scan thingy in the c promt interface, but nothing bad was found.) How do I best go about this computer crashing problem?