Computer sometimes won't turn on when i press the power button
I have a problem where my computer sometimes won't power on, usually it will 80% of the time, but 20% of the time pressing the power button doesn't do anything. When the computer refuses to power on i have to press the restart button for it to turn on. I have the power switch properly connected to the motherboard on the correct pins. Could it be the power supply or the motherboard?
More things i know about my computer:
The cpu has enough thermal grease, and the heatsink and fan are perfect (4200 rpm.).
The cpu is an Athlon XP 2700+ and its average temperature is 50 to 60 C on normal use, internet browsing word processing etc. sounds okay to me
I have cleaned the computer of all dust.
The power supply is an ANTEC brand pwr supply that came with the ANTEC chassis not sure about the model of the chassis. i have had many problems with these power supplies
I suspect that this is caused by the following in order of likeliness
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Is the computer plugged in to a known good power source with a known good power cord? Also, make sure the power is fully seated on both ends. When you press the power button are you getting any indicator lights? The power button itself has an LED that will be either solid green, blinking green, solid amber, blinking amber, or off. Do you hear any beeps?
You possible have some windows problem which need to restart. Sometimes windows are so invalid that only press on reset button can help. If you don't have reset button you need to press power up button for around 5-6 second. If you have problem with viruses, it can be source of problem too. You will need to go to 'Safe mode with networking' (press F8 after start of computer every 1 second). Download ESET (Nod32) hand antivirus scanner, and try to scan your computer in that safe mode. Good luck!
IF the system is not turning on any more, try removing the power cable, then press the power button for 10 seconds. then try to power it on again . If it is still not powering up there could be an issue wiht the power supply of the computer. But if it start to turn on, like showing the Sony logo then windows but not going to the desktop. you can try to log on using safemode. you can go there by pressing F8 on the keyboard after turning on the computer. If it still not turning on even on safe mode. there couldbe an issue with the operating system of the computer and needs to be reinstalled.
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Hi, try..... it worked for me. Power Button Lockout is displayed.The
monitor's Power Button Lockout function is enabled. Press
and hold the power button for 10 seconds to unlock the power
If the computer shuts down with no warning then it could be your power supply is faulty, which explains it not turning on sometimes. Just check the back of the PC to make sure it is plugged in properly (TURN OFF ALL POWER TO THE PC BEFORE CHECKING). if this does not help, get it looked at by your local qualified computer technician if you don't know how to replace a power supply. Also, a connection to the motherboard to the Power button may have a fault somewhere, which also means take it in for a look if you don't know what to do. If it does give you warning with 'Windows is shutting down' it can be the following things. 1- Your power button on the PC is sticky and movement causes the computer to think you have pressed it and so it shuts down, which can also explain why it wont turn on all the time. Just use some household grease cutter and spray it on the outside of the button, turn off the power supply to th computer and press it in and out a few times to get it back to working order 2- A Virus is shutting your computer down on you, but this does not fully explain why it won't turn on but this could be an effect of the virus so use a virus checker to see if this is the case 3- Your computer system is getting too hot and usually a computer has setting which shuts it down before permanent damage happens. Check your PC fans to make sure they are running and feel around where your computer sits to see if its warm or hot and replace the fans or put your PC in a cooler environment
This sounds like your power supply; it's the part that the power cord plugs into that converts the power to dc and powers your motherboard, drives, and everything else inside your computer. You can pick one up for around $30 online or $80 at a retail store.