It could be several things, and yes the signal can drop out especially if you have
Uninstall SUPERAntiSpyware and leave it off your computer for a few dys, and just use your Antivirus + Malwarebytes Anti-Malware Free
Contact your Internet Service Provider
to be sure there are no known local problems in your specific area
and make sure
they check - See if they will give you a Modem for Free or at a decent discounted price -
Do you have a spare Modem or one that you can borrow for a few days if your I.S.P.
will not help you with one ??
I currently have 2 spares as my I.S.P. provided me with a new one for Free after I kept complaining about reception in my area -
See how you go with those ideas, and if the situation continues, we can look for infections later -
Keep your Antivirus as updated as you can, and update Malwarebytes every 2bd day then perform a Quick Scan -
Thank You -