is my MB dead?

[desura]

system went kaput recently.

I just plugged in a new PSU to the system. Now, as opposed to the old PSU, it will weakly half-spin up one of the computer fans, but again, no boot.

What is going on here?

No LED lights are coming up. The problem started when I unplugged a USB mouse of all things from the computer. Did that somehow kill the MB?

 

[Ketchup]

The port the mouse was in - was it on the board or on the case?

You might need to unplug everything non-essential from the board and see if that changes things.

While you are in there, make sure the standoffs on the board are securely fastened.

 

[desura]

The port the mouse was in - was it on the board or on the case?

You might need to unplug everything non-essential from the board and see if that changes things.

While you are in there, make sure the standoffs on the board are securely fastened.

on the board.

Everything is already unplugged.

Standoffs?

 

[cheez]

Standoffs?

yeah the standoffs that go underneath the motherboard by screw holes.

It usually either a motherboard grounding issue or bad power supply. Also if the power supply isn't beefy enough for a given system it does that too. Have you tried putting back old power supply to see it works?


cheez

 

[desura]

System:

intel ivy i5.
nvidia gtx 560 ti 448
2 hard drives and 1 ssd
400 watt PSU

are the relevant ones.

 

[Deders]

If you can't get it to do anything then it might be worth unplugging it completely and removing the battery for 30 mins or so.

 

[cheez]

System:

intel ivy i5.
nvidia gtx 560 ti 448
2 hard drives and 1 ssd
400 watt PSU

are the relevant ones.

Here you go hon.

Your power supply ain't beefy enough to be in the safe zone. Get some moar power.

P.s. is your system overclocked? If so that also contributes to power supply stability issue.


cheez

 

[Deders]

Depending on the model of PSU it should be just enough but yeah 500W would put it in the comfort zone.

 

[ratjacket]

I have had a faulty usb keyboard cause a mobo not power on before (tooka awhile to find out why lol)

I would strip the system (discharge power before you strip it, by powering on with psu unplugged)

reset cmos (either by pins or battery removal or both)

take the mobo out of the case rest on anti static bag

reseat cpu (and heatsink/fan), ram, vga, psu, monitor and internal speaker if you have one (the board may have it built on the mobo), the internal speaker will give a code if it actually does start post.

Dont plug in anything else mouse, keyboard, hdd, cdrom etc

short the power on pins or plug a button into it

if it still doesnt boot, try removing vga or ram to see it it trys to post and give s the correct error i.e halt on ram, halt on vga etc.

if that dosent start the POST process, then maybe look at trying another psu (if you have to buy a new one)

discharging power and reseating componets can sometimes miracoulsy fix things if ther has been some sort of elecrtical lock happen somewhere

 

[Deders]

I'd try just unplugging it and removing the battery for half an hour first