Unsolved
2 Posts
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1136
March 7th, 2020 12:00
Vostro 460, turn on issues
I inherited a used i5 Vostro 460 from a friend. It will only randomly turn on when the front button is pushed. Sometimes it starts immediately, other times i have to push it multiple times, walk away, come back and try again. It may or may not start. Sometimes if i hold the button in, the fans will start but as soon as i release the button, the fans stop. The computer does not boot at that time. When i can finally boot it, it will run for days but then when turned off, it has trouble starting again. I bypassed the front switch and have the same problem so it's not a switch issue. I tried another power supply but that did not resolve the problem. What else could be bad? The mother board? I can't use the computer in this condition so am considering scrapping it.
JOcean
9 Legend
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12.6K Posts
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March 7th, 2020 16:00
Let's take it step by step. You have bypassed the switch (turning on directly at the motherboard I assume) and the problem persists. You have replaced the PSU and the problem persists. That pretty much leaves the motherboard. However, disconnect all of the peripherals so that would be anything plugged into the USB ports and any Hard Drives or SSDs. Also disconnect the optical drive if you have one. So that nothing at all is connected to the motherboard except the power from the PSU. And disconnect means power cables to the peripherals and any SATA cables as well. Now try to boot and if successful something else is causing the problem. I have seen hard drives that had an internal power problem like a short kill the boot sequence.
jcmikelis
2 Posts
0
March 8th, 2020 10:00
I already tried another power supply.
speedstep
9 Legend
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47K Posts
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March 8th, 2020 10:00
power supply is bad.
https://www.evga.com/products/product.aspx?pn=100-BR-0700-K1
savvy2
2 Intern
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2.5K Posts
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March 8th, 2020 10:00
was 2nd PSU out of of another dead PC>?
test it with RAM out 1 stick at a time
no GPU card
no usb connected
no PCIe slots populated.
no HDD, no SDD.
think like this: things short so remove all things that can first. if still dead, then bad mobo,
but if the PC overheats and is fully cool and does not power on then not heat.
see there are lots of things to do, if you looked inside, see all those things inside? unplug them.
not the PSU cables but HDD and DVD cables power, read /black/yellow to them.
any PC can be stripped down to min system.
PSU +mobo+CPU +1 stick of ram. (even no video monitor you can hear PC turn on and not beep (is it)
power button left there, it is not bad.