The computer shuts down almost as soon as it starts up. Then it will
not start up again until I unplug it and start over. Each time, it will
just shut down again. I took the side panel off and watched the LEDs on
the Mother board. A green light stays on near the CPU. When I turn it
on, a red light flashes for an instant at the bottom of the board, near
the board slots. I tried a different power supply with no change. I
tried unplugging all the power cables to the drives with no change. I
unplugged and reseated the memory chip and the CPU with no change. I
don't have another CPU or memory chip of the correct type to try in it.
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it sounds like your motherboard is shutting itself off to protect itself from overheating or some other system failure. you should verify all your fans are running at the correct speed. if it seems like everything is running fine, you can probably turn that off in bios. obviously if there is something wrong with the fans, then you need to replace them. Another options is maybe the processor is getting too hot which is why it's shutting down. open the case and remove the heat sync from the board so you can see the processor. clean the thermal paste off the processor and apply a new generous layer. put the heat sync back on and then try and restart. make sure before you do ANY of this you unplug the computer! good luck and let me know if it works!
I had this problem the other day... I held down the power button until the computer shut down. Then, pressed the power button to start it up again. Windows started with out any problems so, once it got up and running, i did a "proper"restart and all is well.
You need to launch the Last know good configuration to get this fixed.
Follow the steps below,
Step 1: Shut down your PC completely.
Step 2: Trun on the Power button.
Step 3: As soon as you turn it on start hitting the F8 key on your keyboard until you get to a black screen called "Windows Advanced option". (If you don't get to that that screen but you end up reaching the blue screen than that means you have delayed in hitting the F8 key. start again from step 1.)
Step 4: As soon as you reach "Windows Advanced option" use your down arrow keys to choose an option called "Last know good configuration".
Step 5: Select that and HIT ENTER.
Step 6: you PC will boot to the windows. If this fails then you need to perform repair install using the Operating system CD.
Hi, if the computer starts and then shuts down, the problem could be a virus or a bad harddrive. Power off the system and then restart , tap the F8 key couple of times as soon as the computer starts . Select safe mode with networking,check if the computer is able to start in safe mode or not . If the computer is not starting in safe mode aswell. its time to reformat the computer . Install windows on it again
Let me tell you that do not use UPS current on to the computer as the current in UPS is (AC) it would blow whole of the power supply or might effect to your Computer processor. As now you are suggested to get new power supply. hope fully this would work
go into the bios and make sure the USB controller are enabled, save settings and reboot if still same drivers are missing from the operating system, if you haven't got a password boot to windows and plug the keyboard in a different port to re-install the drivers. if you can't, does the computer support ordinary keyboards?
Is there more than one fan inside the computer? Did you double-check the connection from the fan to the motherboard? Sometimes a computer will shut down if it doesn't sense that the fan is turning on, to prevent the computer from overheating.