PC powering down randomly

[SAFC_FTM]

hi guys,

Hoping someone can help with some serious PC issues i'm having.

Running a gigabyte mobo with built in GPU, got a AMD 64 X2 CPU and 2 gig of DDR2. All enclosed in a Coolermaster case with 2 extra case fans on.

Basically all of a sudden my PC has started powering down randomly.
It seems to happen when I do a couple of things at once (eg, running winrar and vlc at the same time, it has always handled this with ease).

Suspected dodgy memory so ran MEMTEST86+ and passed the test easily.
As my DDR in 2 seperate sticks I removed one at a time and tried running with that but got the same results.

Then gave the case a good clean inside and remade the thermal paste on the CPU. Still getting same problems.

Had a spare PSU in the house so just tried that and i'm still getting the same issues.

Monitored the CPU temps and the highest either of the cores gets to is 45 degrees.

Can anyone suggest anything else to do to try and prove what is wrong???

Cheers

[jwth1]

Power supply overtemp? Connectors loose?
Ran into both of these Just a thought

[manxspud]

It would seem you have looked at some of the usual suspects ... however it could still be a number of things ie virus hardware failing ... os corrupt ect

I would advise disabling the automatic restart. When you disable the automatic restart, it will give you a blue screen that contains an error. Once you have the error you can research it and/or post it here so that somebody can help you.

To disable automatic restart on vista do the following:

-- click on windows key + Pause/Break key
-- on left hand box find and select advanced system settings
-- click on start up and Recovery
-- on the bottom of box, make sure to uncheck automatic restart
-- make sure that the option to write event to log file is marked
-- click on ok

Windows 7
Click on the Start button and then on Control Panel.

Tip: In a hurry? Type system in the search box after clicking Start. Choose System under the Control Panel heading in the list of results and then skip to Step 4.

Click on the System and Security link.

Note: If you're viewing the Small icons or Large icons view of Control Panel, you won't see this link. Simply double-click on the System icon and proceed to Step 4.

Click on the System link.

In the task pane on the left, click the Advanced system settings link.

Locate the Startup and Recovery section near the bottom of the window and click on the Settings button.

In the Startup and Recovery window, locate and uncheck the check box next to Automatically restart.

Click OK in the Startup and Recovery window.

Click OK in the System Properties window.

You can now close the System window.

From now on, when a problem causes a BSOD or another major error that halts the system, Windows 7 will not force a reboot. You'll have to reboot manually when an error appears.



Hope this helps

[SAFC_FTM]

It would seem you have looked at some of the usual suspects ... however it could still be a number of things ie virus hardware failing ... os corrupt ect

I would advise disabling the automatic restart. When you disable the automatic restart, it will give you a blue screen that contains an error. Once you have the error you can research it and/or post it here so that somebody can help you.

To disable automatic restart on vista do the following:

-- click on windows key + Pause/Break key
-- on left hand box find and select advanced system settings
-- click on start up and Recovery
-- on the bottom of box, make sure to uncheck automatic restart
-- make sure that the option to write event to log file is marked
-- click on ok

Windows 7
Click on the Start button and then on Control Panel.

Tip: In a hurry? Type system in the search box after clicking Start. Choose System under the Control Panel heading in the list of results and then skip to Step 4.

Click on the System and Security link.

Note: If you're viewing the Small icons or Large icons view of Control Panel, you won't see this link. Simply double-click on the System icon and proceed to Step 4.

Click on the System link.

In the task pane on the left, click the Advanced system settings link.

Locate the Startup and Recovery section near the bottom of the window and click on the Settings button.

In the Startup and Recovery window, locate and uncheck the check box next to Automatically restart.

Click OK in the Startup and Recovery window.

Click OK in the System Properties window.

You can now close the System window.

From now on, when a problem causes a BSOD or another major error that halts the system, Windows 7 will not force a reboot. You'll have to reboot manually when an error appears.



Hope this helps

I've done this mate and the PC is still powering down randomly!!!!

[manxspud]

Then what is the error code you get when you see the bsod ...

that should be a clue to what your problem is

we only have the info you post to go on as we are not sat at your pc ... although gut instinct tells me there is a strong chance your mobo

is f**ked

[SAFC_FTM]

i dont see a BSOD mate it just turns itself off as though its been asked to power down!!!

[SAFC_FTM]

another thing to note is when it happended last I checked the Hard Drive physical temp by touch.
It was failry warm, not too hot to touch but warm enough to notice it, would you say this is normal?

[cunny]

Does it shut down, or, turn off totally ie lose power

[SAFC_FTM]

Does it shut down, or, turn off totally ie lose power

totally loses power mate, any clues to what it could be?

[cunny]

and when you press the power button, after a power down,what happens ?

Does everythin power back up right away?
Do fans go round a few times then stop?

It sould like over heating, check gfx card, ram ect, not over heating and seated correctly

[SAFC_FTM]

and when you press the power button, after a power down,what happens ?

Does everythin power back up right away?
Do fans go round a few times then stop?

It sould like over heating, check gfx card, ram ect, not over heating and seated correctly

It just powers back up straight away, but sometimes all it gets to is the win7 logon then powers down again, other times it will remain on for a while.

Fans start up no probs.
Checked ram and all usual stuff, remade artic paste on CPU and I dont have GPU as I just use inbuilt on mobo.

Got me totally stumped!

[cunny]

start unplugging stuff. As you said you swapped psu, i would start to remove dvd drives/usb ports headers/hdd drives

I think you got a loose connection somewhere

[trilog]

try checking the fitting of the various power plugs to the main board. Also check the fans. My problem was a fan.