Router problem

Recently, the company's routers often go wrong, Ping sense, and sometimes the power to pull the plug like a heavy, and sometimes also on the route of the cable you have to do with re-inserted.Today is the routing and The power switch is pulled and then re-inserted to do so.'s 360 computers have installed a firewall, antivirus software upgrades are on time, it should not be the virus.Which well-intentioned people tell me how to solve this problem??

what the Arab-Israeli routing? change it, buy a good point for a change it may be the cable and router port bad Another possibility is
router input voltage instability

determine if this 2, in general can only change the new router, not expensive anyway, to see about 100 yuan barrier ping When Gateway mac is not normal, there may be bad arp to deceive you, and if so the best for the other! Do not studied, some too low-end routers will be such a problem does not change his law