Originally Posted by
Celawien
Call your cable company, tell them you need the modem moved to where it will get proper signal which your install tech did not check. Your cable company is responsible to get proper signal to your modem, beyond that it is up to you. Refuse if they send a contractor that you want an in house tech only. Get them to get proper signal to your modem. If it is further away from your computer then you may also need to buy a wireless extender and place that halfway between the modem/router and your computer.
Source: it's what I do, cable tech for a major cable company.