random sites don't work

[aSPIRIn4]

Hi guys. short story , my parents want to use my very old pc to look up for things on the web. the problem is that since i`ve moved the pc to another room some random sites just don't work

"This site can't be reached ....server ip address could not be found."

facebook, youtube, linustechtips , yahoo, google, wikipedia, they all work 

booking.com sport.ro emag.ro amazon.com ebay , aliexprex , this sites don`t work ( random sites )

 

Everything seems fine with the network ( if i hook up the cable to my laptop everytings works ). I really don`t understand how can moving the pc from one room to the other can do this.

Any ideas?

 

[Skiiwee29]

Usually things like this are caused by DNS issues.