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Believe it or not it is probably your Power Supply. Just because it
lights makes the system lights up does not mean it is working properly.
Sometimes it has enough power to make the light glow, but not enough
power to make the fan in the power supply start or any other functions.
You can also try the things below to see if they work, if not replace the power supply.
When you plug in the power cord is there any lightswhatsoever on the computer?
you press the power button do you hear fans running, hard drive
spinning,lights on the computer, hear any beeps or lights constantly
blinking, hear theDvD/CD drive click and the light on the drawer of the
DvD/CD turn on for asecond or two? If so the computer is trying to boot
or may have booted, butthe screen is not showing for some reason.
tones and blinking lights tells the technicians what is going on with
thelaptop and why it is not booting. Most times it's a motherboard
issue when you hear beeps or blinking lights continuous. Most times the
problem is with the Memory or Video Card when you hear beep tones or
blinking lights. Notice the pattern of the lights and blinks. Do you
get 1 Long Blink or Beep? Maybe you get 1 Long followed by 2 Short
Blinks or Beeps.
Maybe your power cord is bad if you don't get anything to happen whatsoever when you press the power button.
you have a Static Charge Buildup. Remove the Power Cord, then Press and Hold the power button for 30seconds. After
30 seconds plug the power cord back in and hit
the power button to see if it boots.
Memory Chip might be bad. Remove the Power
Cord, Open the Case and remove one of the memory chips. Set the chip
aside then try rebooting the computer. If it boots, then you know the
memory chip you set aside is bad so mark an x on it with an ink pen. If
it fails to boot then move the chip to the next memory slot and try
rebooting. If it fails take the chip out and set it aside, then put the
other chip in and try booting it in both slots. If it boots, just to
verify that the chip set aside is bad, mark an x on it and put it into
the open memory chip slot and try booting.
I don't understand the beep code you describe, but the 2850 has many beep codes to help understand what is going on.
First ... Identify the beep. Does the beep start as soon as you power it on, or after several seconds? What is the pattern of the beep - is it a repeating set of beeps - 3 sets of beeps between 1 and 4 beeps ... like 1 beep-3 beeps-2 beeps, or 3 beeps, 3 beeps, 1 beep? Or is it a steady repeating beep - about once per second?
Second ... is the LCD panel on the server blue or orange? If orange, what is the error code(s) it is scrolling?
If it is a steady, once-per-second beep, it is probably your RAID controller. Does the system boot to Windows/OS ok? If so, use (or install) OpenManage Server Administrator (Managed Node from Dell's Support Site) to check the Hardware Logs and check the RAID array (under Storage/Virtual Disks). If it is not booting to the OS, then go into CTRL-M to see what the status of your array is.
I have a couple of questions and some troubleshooting tips for you:
Questions: Is the splash screen coming on at all? Any picture or text right when you boot up? What Windows are you running (Windows XP or Vista)? Are there any lights on when you boot up or beeps? If so how many beeps do you hear?
First troubleshooting: If it boots up and is at least showing the splash screen (splash screen or text) then it would be that the operating system is corrupt. This can be caused by several things included viruses, power surges or hardware failure.
The solution for this would be to take the hard drive out and slave it to another working desktop computer to retrieve your data. The attach the hard drive back on and reformat it (I can add specifics to doing this once I know the operating system).
Second troubleshooting: If you hear the operating system chime but do not see a picture and all the lights are on, then this would indicate that the back light on the screen is out. You can test this simply by hooking the laptop up to a monitor and see if you get a picture. If the computer screen shows on the monitor, then your back-light is out. If it doesn't show up then your video graphics card is out.
If the back light is out, it is easier to order a new screen (new or used) from eBay and just switch out (simple process and you can find a replacement for under 50 dollars on eBay). If it is the video graphics card, then you can also purchase one from eBay and switch out (a little tougher because you have to take the top of the laptop off). You can get assistance with this from the manufacturers website and pull specs for free.
Third troubleshooting: If you do not hear any beeps and the above solutions did not work. Then your motherboard has failed. This can be caused by surges or dust. You can purchase a replacement from eBay for a fraction of the cost and replace (this is tough and I am not sure if they have specs for this). You can do it yourself, just be sure and put everything back together as it was.
Fourth troubleshooting: To test the battery, take the battery out of the laptop and turn on with just the adaptor. If it boots, then the battery will need to be replaced. There is no way of testing the power adaptor but 85% of the time, this is the problem. Even if lights come on, the adaptor sometimes gets so overheated that it silently goes out but gives just enough power to make the lights come on. The power adaptor can be found on eBay for under 20 dollars and is cheap enough to replace (first) to make sure that is not the problem. The battery can also be found on eBay for under 60 dollars.
Please let me know if you have any questions and I will be glad to assist.
Seems the RAID is broken. You may see which drive (hot swappable?) it showing an error code with its lights in front. If not, I would suggest re-seated all drives. If you see one that is not right, remove it all the way, while it is on, then push it back in, it should try to rebuild the raid on the drive, if it still fails, you will need to replace the drive.
Not sure what RAID you are using or how many drives, so feel free to explain more.
In this case you should examine the motherboard and the processor.
verify the Mboard maybe maybe some part oversheat, if non then , Kindly remove the processor, then switch on for a while then shutdown: fix back the procesor and then switch on. still no beeps? try your Processor to other computer system with same socket on mainboard. if the processr work; then your mainboard is damage. u need to replace; if not work. processor is damage and need to replace.
Be sure to test all the pheriperals of your system before you buy a replacement to see if some other parts is no problem.
Like memory, VGA,
If all of the solution is not working its time u to assemble new computer system. i give you all the possible solution, or else tell me the working part i will help you seeking and speicy the replacemnet part.