Motherboard shuts down after 1 minute - Gigabyte Matx Intel G31 775 DDR2-800 Motherboard

Is it the motherboard that is shutting down? Or is it the power supply cutting out? Disconnect the power supply from the board and with a DC Volt meter check that the output voltage is constant, if not change it.

there is a experimental method to bring your notebook to life 1. put a scotch tape on every cooling hole on your notebook 2. put the notebook in a nylon bag and powered it on for about 1 hour 3. notebook may be shut down after a 30 minutes remove it from the bag and remove all scotch tape and put your notebook on the table for about 30 minutes to cool down than try to powered it on with this method fix my dv 6000 pavilion :)

Hello
I have a intel dg33bu.Have a look at the internel fans.Are they clean.
The processor fan and heat sink need to be clean of dust and dirt.
Last- It may be a good idea to put some fresh thermal paste on the processor.
What you are describing sounds like a heat issue,runs,heats up then shuts down.

Call Dell for support. Looks like something in motherboard detects something (like temperature) then shut down your system.
Probably only need cleaning up inside.

Remove the RAM from socket. Clean the RAM contacts with pencil eraser & then refit RAM.

Hope this solves the problem..

remove the cover and check that the cpu and power supply fan are working. clean the cpu fan/heatsink of all the dust and dirt that has accomulated.

Robert

Sounds like the power circuit on the motherboard could be faulty. Look for any leaking capacitor on the board, may be fixable by replacing the component. It's easier but more expensive to replace the system board.

check all cables ide connectors .the problem may lie in the processor loose hsf or broken pins.if not irregular power supply .

Try to check the capacitors of the motherboard, maybe some of them are damage, they can cause this kind of problem