Solved PC doesn't boot up - faint high pitched noise from the PSU

April 12, 2012 at 00:54:46
Specs: Windows 8
Model: Aspire M5641
Graphics card: GeForce 8400GS 512MB
OS: Windows 8 Customer Preview

Here's how it usually goes down, I put the PC to sleep right before I get to sleep myself and turn it back on the next morning. I do this every day and each day I get a blue screen error which I assumed had something to do with the OS being a customer preview, to which my solution was to hold down the power button to turn the PC off and turn it back on.

This worked gloriously for about 2 months, but this morning it went all wrong.

I turned it off by holding down the power button as usual, tried to turn it back on and I get nothing, no display, no lights, no CPU fan not even the PSU fan. But I could hear a continuous faint high pitched noise from the PSU.

Done:
Tried booting it up without the RAM, HDD, CMOS battery and anything else that I could think of but nothing worked.

Wired up the Green cable from the PSU to the Black one which got the PSU fan running.

Any help would be greatly appreciated.


See More: PC doesnt boot up - faint high pitched noise from the PSU

Report •


#1
April 12, 2012 at 02:19:56
Try new PSU and get rid of win 8 consumer preview it is not good for your system.

You know the real meaning of peace only if you have been through the war.


Report •

#2
April 12, 2012 at 02:30:50
The PSU seems to be fine, it's fan did work when the green and the black cables were connected.

Report •

#3
April 12, 2012 at 02:44:50
✔ Best Answer
From several years of experience, I can say with 99% confidence that you need a new power supply. The high-pitched noise is likely a bad transistor oscillating. With the cost of power supplies these days, don't try to "save money" by flipping wires around - it's a component issue... and you'll likely damage your motherboard or other components if you put the +12V lead in the +5V, etc.

Report •

Related Solutions

#4
April 12, 2012 at 03:00:03
Get new PSU from corsair, antec, rosewill(450w unit) etc. Avoid junk unit at all cost, check newegg if u live in north America.

You know the real meaning of peace only if you have been through the war.


Report •

#5
April 12, 2012 at 03:37:50
Alright then I'll go for a new 450W PSU. Thanks for the answers guys, appreciated.

Report •


Ask Question