PC randomly turning off/not booting at all

August 2, 2011 at 09:25:58
Specs: Windows Vista, Pentium D, 2g ram
My old desktop PC is a Medion MT7 Pentium D 2.80GHz, 2g Ram, running vista.

I think this maybe a PSU problem, but before I go out & buy a replacement I thought I'd check in with the experts.

The PSU is a FSP300-60GTM

It started not to boot when I had my 2 external HD's plugged in, so I made sure to disconnect them prior to powering it up and it worked fine.

However it started acting up again, and eventually I worked out the DVD drive also needed to be unplugged for it to boot this time.

This worked fine for while however now it randomly just turns off after so long (plugging in my usb-powered external HD will trigger it 50% of the time) + will only boot 100% of the time if I disconnect the c drive in addition to EVERTHING else

When I say it doesn't boot, I mean I press the power button, it powers up for 3 seconds, and then turns straight off with clicking sound from the PSU.

No beeps or any warnings.

It seems to me like the PSU is steadly 'losing' its wattage, as I have to keep disconnecting more & more things to get it to boot, and when I plug them in again once it does boot, it's only a matter of time before it turns off again.

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August 2, 2011 at 09:59:31
The PSU is a FSP300-60GTM
The PSU is a piece of crap

clicking sound from the PSU
PSU doesn't make any clicking sound, may be the clicking sound comes from another component for e.g hdd

Don't make the same mistake again, buy a quality unit.

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.

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August 3, 2011 at 10:36:00
Thanks for the quick response, I went to buy a better one but the guy at the store said to find out my motherboard model first as it might not be able to handle the new PSU?

I just checked it & its a Micro Star ms-7255.

How do I know how much wattage it can handle?

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