The only way would be if you have a tower based system.
You can then buy a Tv card for the pc, where it can be fitted into a free Pci or pci-e card slot on the motherboard.
What you have to do is know what type of signal is being passed down the coax cable you are talking about.
For example is it for over the air tv Transmissions such as a tv aerial on the roof.
Or is it for a cable tv box, or does the coaxial cable feed of a satellite dish
In the case of the first type of signal all you need is a Dvb T tuner tv card for over the air.
For cable, or satellite.
You will need a card where it has a cam slot on it.
And you will need for example a valid and working Smart card from a sat cable box.
Or a cable smart box.
The card used to desc-ramble the channels is then fitted into the Cam slot provided on the Tv card fitted to the Pci or Pci-e card slot of the pc.
They are not cheap to buy, as most of the card can be used for all three types of digital signals from over the air, to cable, and for sat dish connection.
An example of one is bellow, as said for the latter two cable, and sat a decoder card is required to be fitted into the cam slot for decoding.
http/www.ebay.co.uk/itm/TBS-6528-PCI-e-TV-Tuner-with-Common-Interface-DVB-S-DVB-T-DVB-C-Full-HD-1080p-SD-/182288661447?hash=item2a71403bc7:g:sy8AAOSwmfhX4n~9