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Welcome!What Hardware version is your router? Look at sticker under router.
Link>What
Firmware version is currently loaded? Found on routers web page under status.
What region are you located?
What ISP Service do you have? Cable or DSL?
What ISP Modem Mfr. and model # do you have?
Turn off all anti virus and firewall programs on PC while testing. 3rd party firewalls are not generally needed when using routers as they are effective on blocking malicious inbound traffic.
Turn off all devices accept for one wired PC while testing.
Check cable between Modem and Router, swap out to be sure. Link>
Cat6 is recommended.What browser are you using?
Try Opera or FF? If IE 8 or 9, set compatibility mode and test again.
Ensure the PCs network configuration is set for Automatic Obtain IP addressing.
Can you ping the 192.168.0.1 address from a command line box?