I don't know what's up! I have my cable modem, CPU and Monitor hooked up and it recently began to cycle to On Battery for the standard four-beep warning at random times. Other times, sometimes during the same cycle, it doesn't make it to four beeps and then everything is fine for awhile! None of the other appliances hooked up to the same outlets show any change when this happens. Florida is notorious for "dirty" power conditions and I can usually see the results of dropouts and spikes in the lamps when they occur, but this doesn't seem to follow that pattern. The battery is 3 yrs. old, but seems to be doing well and it really hasn't been stressed more than a couple of times.
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The fact that it show warning battery sign is normal because it appears that there is no input power or the input circuit is not working. Trace from first principle check the input power coming to the ups/ then check the fuse/ the rectifier and so on. I hope this will help.Please let me know
OK - I'll ask the simple question first, so don't think I'm being crappy...
When you hooked the wires back up to the batteries that were replaced, did you hook them back up as they originally were? (I ran into this problem myself earlier today. I put one of the batteries in upside down and didn't have them hooked up correctly.)
Red terminal on the front battery goes to the black terminal on the back battery, then the black terminal on the first battery goes to the circuit board. Red terminal on the back battery goes to the power supply.
Hope that helps. It sure is a pain the change these batteries out.
1. The cable linking your CPU to your monitor might not be properly plugged or has been damaged. You should hence ensure that the connection between the two devices has been properly done and that the cable’s state is fine.
2. You might be facing a problem with your monitor if the CPU makes a single beep error sound when you switch on the system. You can check whether the problem comes from your monitor by testing it on another CPU. If you still have “No Signal” error displayed including the error beep, I would strongly suggest you to try to get your monitor fixed by a competent technician or to get a new monitor.
3. If you receive several error beeps when starting the computer, this might be linked to a graphic card dysfunction. You can refer to the motherboard notice or check that the connection has been properly set
Usually this is caused by a bad VGA cable. Try wiggling the cable around and see if you can get it to come back to normal. I have one PC right now that I've had to attach a rubber band to to keep the cable in a certain spot so I don't get a tint. Unfortunately, if your VGA cable is built into the monitor, you'll have to replace the monitor but if it's not then you can just purchase a new one and that should solve the whole problem.
If it's not the cable (i.e., you wiggled and twisted it near the computer's plug in and it doesn't change at all) then it's either the monitor itself or the video card. Test the monitor on another computer and see if it does it then reattach it to the original system. If it does then we know it's the monitor.