Computer shutting down after trying to OC 2nd card?

[hawk196]

Hi, I have a question if someone can help? I have 2 cards 1 5850 and a 5830. I can up the voltage on my 5850 and get it to a steady 930 clock, but when I try to mess with the 2nd one my pc reboots. Isnt it supposed to reset the driver if the card isnt stable and not reboot? I have a 750w PSU

Any help will be appreciated

[myb87]

this is normal if your OC is unstable.
try to start at stock values and see if everything is working fine and then OC little and see how things goes.
you can also search for the 5830 thread i am sure you will find more details on a stable OC settings people are using.

[OCedHrt]

Mine also shuts down when the card is overheating. It just powers off. This doesn't always happen though and sometimes it happens after several days of mining.