Computer cycles On/Off when trying to boot from hard drive. Hard drive checks out to be fully functional. New Battery and good external power supply.

hi good day.
your computer operating system might be corrupt, you must check the hard drive, if their is something clicking noise your drive are in old service and want to retired. if not, you must back up the files and reformat the drive to new one operating system.

Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect/ boot up a computer hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your "((MOTHERBOARD TO YOUR HARD DRIVE))" make sure they have a secure connection and are not faulty or just replace them they could be faulty
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electrical extensions or just replace them they could be faulty a computer needs its connections to continue its cycle and have an end so any faulty leads will end up with a computer error even something as small as a faulty electrical extension or fan lead can cause this problem

follow the troubleshooting procedure a computer needs all of the data and electrical current to travel through every device and to have an end to be able work properly

a motherboard and a hard drive any leads between them will fail before your motherboard or your hard drive if its a flat ribbon 40 pin type IDE replace it this will be the first to fail check all electrical extensions make sure they are securely seated even the cd/dvd floppy drives need to have current go through make sure these drives are working also it could be a dirty computer clean all of the dust from your computer you could use a vacuum cleaner but whatever you use make absolutely sure there is no moisture gets to anything in your computer

hope this helps

replace you ATX casing. the power switch of your ATX is not working..

The external storage device has several major components:
* USB cable
* external power-supply
* disk-drive inside the enclosure
* USB-to-disk-drive adapter inside the enclosure.
Try a different USB cable.
Try a different USB port on your computer.
Try a USB port on a different computer.
Take a multi-meter, and measure the output voltage/amperage of the power-supply,
and compare with the specifications on the label of the power-supply.
Open the enclosure, and remove the disk-drive, and attach it as a "slave" drive in a desktop computer, to see if bypassing the USB-to-disk-drive adapter bypasses the problem.
Look at the label on the disk-drive, for manufacturer, product-number, serial-number, and manufacture date. Access the manufacturer's web-site, and use "check warranty status" to see if the warranty still is valid. If so, the drive can be replaced, at minimal cost to you.
Buy a new, compatible, disk-drive, and install it in the enclosure, to "revive" your external storage device.
Search online for a professional "data recovery service". For a significant fee, they can repair your disk-drive, just long-enough to copy your files to a new disk-drive.

Before you do anything else, grab a voltmeter and check the output of the power adapter. It should be 19 Volts DC, if it is less than this it needs to be replaced. The CMOS should not stop the computer from booting. It's purpose is to remember the time/date and preferences such as trying to boot from the hard drive or cd first.

This can be from a number of things.
1rst, is the drive showing as disabled in your bios?
If not, with laptop powered off, then try unplugging the dc adapter and removing the battery. remove the hard drive. Let the computer sit for a few minutes.replace the battery but do not plug the dc jack back in. boot the computer without the hard drive and let it go to the point of failing boot with no hard drive.
Power off. hold down the power button and let it cycle power (goes on then off)
remove battery and replace hard drive. try to boot and see if this will allow your hard drive to recognize.
If this doesnt work then repost and can go from there

It's possible that it's a hardware problem, Since this is a laptop it may be hard for you to reseat some of the internal devices inside in your laptop so we could start isolating the issue from the hardware and to the software.

First try to power cycle it, turn off your laptop remove the battery, any external connection like external mouse, external hard drive and monitor and press the power button for 15 seconds after that put the battery in and turn it back on without the external devices plugged in. (if it turned on without a problem that's good-possible that one of the external devices are causing it to keep on restarting, to isolate it you can just put the external devices one-by-one and start the computer, if it start occuring you know who is causing the problem)

If you can disassemble your laptop you can try to remove the hard drive, then turn on your computer, if your computer didn't restart that means that the problem is with you hard drive, possible that the software installed in it is faulty or the hard drive itself (try plugging it back in properly let's see if it'll work, if not, you may need to buy a new hard drive or before buying one, you can try to plug your hard drive to a different computer (acting like an external hard drive) and backup all your important files and reformat that hard drive, after reformatting it you can try to plug it to your laptop again. (if that hard drive is not detected to another computer meaning that it's faulty)

If that didn't resolve the problem, you can try to reseat the memory testing each memory chip and slots, processor.

The eMachines M5105 is notorious for failing to boot if left unplugged and powered off long enough for the battery to become mostly discharged. Plugging it in to AC power will cause the battery to start charging; and the hard disk drive to spin while the CPU cooling fan cycles on and off vigorously. THE UNIT WILL NOT BOOT UNTIL THE BATTERY IS NEAR FULLY CHARGED; then THE AC DISCONNECTED; and then THE (charged) BATTERY REMOVED AND RE-INSTALLED! Most units will boot after following the foregoing procedure.

First of all Hi!

This Fixya will help you solve this problem. First of all your hard drive should be still ok but you will require to open the hard drive enclosure and replace the power supply (due to the wrong voltage tapping). Please feel free to follow these fixya's not only to recover your photos but get back a working hard drive!

Solution 1: Check fuses
1. Disconnect faulty enclosure from any mains supply
2. If power supply is INTERNAL you will have to OPEN the enclosure but BEFORE you do that WITH THE hard drive UNPLUGGED TURN ON the power switch to discharge the hard drive's internal power supply
2. Open the enclosure and check for any fuses on the inside. There should be one located close to the power swtich from inside. Change it with one of a similar rating because most probably this is the culprit.
3. Try and power up the drive THIS TIME WITH the CORRECT voltage tapping
4. If the power supply is EXTERNAL you do not need to open the enclosure, just change the power supply with a similar one and you should be up and running again.

Solution 2: But the fuse is ok but there is bbq smell when i opened the enclosure!
1. Ok this means that you will need to get hold of the internal hard drive.
2. If you have another computer check if the hard drive is still ok! Here is how:
- Turn off the computer
- Open case , #
- Hook it up to the Internal IDE cable and the internal power connector
- Turn on the computer.
- You should have this detected in my computer as a new hard drive and you
should be able to see all the data in it
2. But probably you still want this as external dont you? Ok buy another enclosure from a computer shop (this time you will just need an empty one)
3. Plug the hard drive in new enclosure. If you're not experienced enough just give it to them to hoook it up for you and FINALLY you should have the reincarnated buffalo hard drive functional again.

Hope this fixya was of help :)

Best Regards
ALx

- Please take some time to rate this solution, really appreiciated thanks :) -

Unplug the power from you 700xl and from you monitor. Try removing the cmos battery and reinstalling it. Then, plug everything back in and try restarting. If it continues to give you the yellow light, you may need to replace the CMOS battery, especially if it is more than two years old.

Another thing to consider is if your power supply is underpowered for the number of external devices you have plugged into it (i.e., cd, dvd, external hard drives, printers, pci cards, etc). Gateway installed very low powered power supplies in their 700xl desktop computers. Usually only around 250 watts maximum.

If you are replacing the power supply with another 250 watt maximum power supply, and you have a lot of external devices plugged in, you may need at least a 350 watt power supply....if your CMOS battery is not the problem.