modem losing connection to computer?

[yum]

i desperately need some help fixing my modem which i've had for 3 years with no problems until today.

it seems the modem can't keep the connection to my computer stable. when i look at the uptime it should be constantly moving up each second in my browser.

now when I look at the uptime it jumps 2 or more seconds [i.e from 34s to 37s] instead of being constant. and every time the seconds jump, i lose connection.

i currently have haxorware version 1.1 revision 32

I believe my modem is an Ambit Modem model U10C018

thanks in advance