BSOD in mwac.sys together with tcpip.sys in Malwarebytes for Windows Support Forum Posted October 13 Yes, everything runs OK now. I hope the BSOD will not occur again. I have downloaded ADWCleaner and did run it. It found only three things and two pre-installed programs from Lenovo (which I don't mind). It found this: - file Askcom.xml in a Firefox profile searchplugins directory - directory Search in C:\users\<user>\Favorites (I don't know why that is bad?) - a registry key which belongs to some known good programs and which is certainly not malware (I have no idea why ADWCleaner flags this) I did let it remove the first two and rebooted. And, yes, I have a lot of items starting automatically when the PC boots. But that is OK. Thanks for your support.