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try this shut down computer unplug the power supply open the tower remove the cmos battery if you don't know how the battery looks just look for a one similar to a cel battery like the ones that are use for watches only bigger. Then plug your compu back on turned on never mind the message you get after that again turned off unplug the power supply again put back the battery make sure the letters and numbers are facing you plugged back turned on if work you will need to reset your date and time again.
Remove the power cord.
Locate the 120V / 240 V ac selector switch. (within 4 inch from the power inlet)
Move it back and forth few time.
Make use it's set to the correct voltage selection.
Reconnect power cord and power up.
This AC selector switch can get shifted and set to different position.
Hi, If the computer is hot near the electrical plug in the back of the computer then the power supply needs to be replaced. This will also cause overheating problems if the fan does not exhaust enough air. You should not run the computer in this condition because the power supply can short out and take other components with it. Also there is a risk that it will burn up. Power supplies are very inexpensive and can be changed by anyone with basic computer repair knowledge. Hank
1. Remove all the connection at the back of your computer 2. Power cycle your computer tower by pressing the power button for 15 seconds 3.
Plug the power cord back in and monitor cable at the back of your
computer tower (if it turned on, meaning that one of the device plugged
at the back of your computer is the one's causing the problem, for you
to pin point the problem, try plugging it one-by-one and turn on the
computer each time you plug a device) 4. If it keeps on doing that,
open up your computer tower (be careful to unplug the power cord and
power cycle it to avoid static electricity) 5. Reseat the video card, turn on the computer again, if it's still occurring 6.
Reseat the IDE/Sata cable of your hard drive and try to make sure it's
properly plugged in, turn on the computer again, if it's still occurring 7. Reseat the memory, turn on the computer and test it again if the same thing 8.
If you have 2 memory chip inserted in your computer tower memory slot,
remove the other one and turn on the computer, do the same thing to
other memory and each slot 9. Reseat the CPU and start the computer.