Aspire M7720 blinks power once, not turning on

[Index]

I have a Aspire M7720 using for 5 years and no hardware changes. I usually turn on my computer and leave it overnight. I have an additional USB fan plugged in.

I was using the computer just now when suddenly it turned off by itself. I waited for 5 minutes (because my computer will fail to startup during Windows logon screen and stuck). After 5 minutes, I tried to on it and nothing happens. So I switched off the power supply and waited for another 5 minutes and on again. This time, the power light (cylinder thingy) blink once and nothing happens.

My LAN cable was plugged in and flashing all the time, so I supposed it is working.
My USB fan was also working when the computer was switched off and power supply was on.

I could not know what problems do I have, but I knew the AC Plug was working.
Can it be the motherboard? Hope I gave enough details. Thank you.

 

[nilank]

What were you doing while it turned off?

 

[Index]

What were you doing while it turned off?

Using another PC. You mean when the power supply turned off?

 

[nilank]

I mean when the computer turned off by itself, what were you doing with that PC? Playing a game? Watching a movie or what?

 

[Index]

I mean when the computer turned off by itself, what were you doing with that PC? Playing a game? Watching a movie or what?

I was playing a game.

 

[gregrocker]

Unplug the PC from the wall, hold the power buttonin for 20 seconds, then reconnect it and try to start it.

If this fails try another power supply. A local shop may allow you to hook theirs up to see if that is the problem, then you can buy the PSU there or online.

Power Supply Calculator

 

[nilank]

Hello Index,

Exact same thing happened to one of my old systems as well, I was doing some CPU intensive task. I took it to a technician, they could not figure out what was fried. Ultimately had to replace the mobo.

You must take it to a technician to get it checked.

 

[rosevaldez]

I’d suggest to try for power supply issue first, if its not working get it to a techie.

 

[Index]

Thanks everyone for the replies. Just found out from the technician that the power supply inside the computer is broken.
Already sent my PC to the technician. Thank you!