I was trying to do some computer maintenance earlier today, and got a blue screen of death. Since then, as soon as I boot Windows it crashes again. I'm posting this in Safe Mode, which seems to work fine.
I ran CCleaner on its default settings, uninstalled Avast and installed Kaspersky in its place. A couple of minutes after this I got the first BSOD.
The BSOD is DRIVER_IRQL_NOT_LESS_OR_EQUAL, the driver in question is ataport.sys. I've tried to Google this problem, as a result I tried running sfc /scannow and a rootkit scanner and both came up clean. I'm not sure where to go from here.
I've attached the Minidump files below. Thanks for any help