How do we disassemble tower to replace power supply?. We need to know the sequence of removing hard drives, fans, disc drives, etc. to get to power supply to replace it. It appears that the entire computer needs to be taken apart to get to the motherboard to disconnect the old power supply and install the new one.
This one is just as easy as 1) removing the side panel; 2) Remove the four screws that hold the power supply into position; 3) Remove the power supply cables from the motherboard (NOTE: If the media bay reader is in the way, you remove the front bezel by pressing the release tabs on the bezel and it will swing open. Remove the one screw securing the bay in position, then slide it forward so you can reach the power cable to the motherboard.); 4) Remove the power supply cables from the hard drives, cd rom drives, and other peripherals inside the PC. 5) Remove power supply...sometimes there is a button to push and it will slide out, sometimes not. 6) Replace power supply, then reverse procedures.
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1.Sounds as if the power supply is not working. 2.Needs replacement by qualified tech or if you know how to disassemble and replace. 3. hard drive not getting the +12/+5 volts needed to boot. 4. no power to the mother board.
I strongly advise you to replace your old (VERY OLD!!) PC with new one. Do not worry, you will not lose any data from your old PC if you will take hard drive off your old PC and fix to new one.
Anyway, if you still want to keep your old PC (NOT RECOMMENDED) you will have to buy new Power Supply and clean up your PC inside.
Power led on the front of the tower, it should be solid green when on. Flashing Amber is generally an indication of a bad power supply inside the tower
Power LED Solid AMBER indicates system is not finishing the power on self test (POST) and you remove all connections from the tower except power and try turning on again. If no change, remove all PCI and PCI-E cards from system, try again, no change replace motherboard.
On the back of the tower are 4 diagnostic LEDs near the ps2 ports marked ABCD, after the POST, during a normal boot the will flash in several sequences and with boot is finished all 4 should be green. If they stop an a different pattern, then that indicates a failure Yellow Yellow Green Green indicate bad RAM for example
If the LEDs on front and back are Green then the system appears to be booting but the monitor display is not functional
hi this might help ...open tower and discharge static by touching frame of computer ...then pull out power supply connection on the motherboard and this usually is connecting to Hard drive and disc drive pull them out also then on the outside of the back of the computer you should see screws around where the fan is usually at the top of back of pc. unscrew and then it should come out..hope this helps good luck
Please try to remove all the connections from your computer and also connections inside the motherboard, the power cord for your hard drives and also the power cord from the power supply to your motherboard.After that, remove the memory and clean the pin by using an eraser of the pencil. And then insert again the memory stick and connect all the connections from the power supply to motherboard and everything. Lastly reset your bios and put it back to normal again. Hope this would help. Thanks..
sounds like it could be a bearing in your hard drive. is this problem constant? If so, I would open up the tower and disconnect the hard drive and then power up the tower again. if the sound goes away--you need to get a new hard drive. If not, you could have some dust bunnies in your cooling fan.
The post begs for the obvious answer: Replace the fan.
Now to be more polite, first you need to identify the failing fan and replace it.
A desktop system can have several fans. Case/processor fan (you can test to see if this is the effected fan by unplugging it for a minute or two from the motherboard (a couple minutes will not hurt the system).
The video card may have a fan on it (Often on the underside if a mini tower) Some video card fans can be easily removed but finding replacement fans can be a challenge. Normally if a video card fan fails, replace the video card.
Most often, the failing fan is in the power supply unit or PSU. If you are handy with electrical components, you can remove the PSU, remove the fan and replace it. If you are not handy electrically, replace the PSU.
Higher end system may have card cage fans to help cool hard drive/expansion cards and others have fans specifically to coll hard drives.
Most manufacturers have spare parts where you can buy parts or you can use google to find specific replacement parts or fan suppliers.