I just built a new computer and i've been having a problem with it randomly cutting off.

Im running a 700w OCZ power supply, and its in a full size tower, with a few fans...so cooling shouldn't be an issue either.

I've noticed it cutsoff when im trying to do anything that takes alot of resources with my computer to do, such as installing games and the such...i'll get like halfway through an installation and it just cutsoff. It does the same thing when im running system diagnostics sometimes, and then sometimes it cutsoff just randomly sitting.

I tried loading speedfan onto my computer to see what the temp and voltage measurements were while installing something but windows keeps giving me a driver error saying that there's an unsignatured driver and that the program may not work properly because of it. Is there anyway around this so that unsignatured/identified drivers can still be installed?

When i do go to run speedfan though, it gives me a Unable to use I/O message.

I'm really not sure whats going on with my computer

Sounds like it could be heat or memory related. And yes it is fine to install it just means it's not signed by ms

It keeps saying that it wont install the driver due to it not being signed?

and what is the maximum speed for memory that i can have for an EVGA nForce 680i, i looked it up online and it shows 1056 or something like that and above, but on the box it only shows up to 800...im running 2 1gb OCZ 1056mhz sticks, could this be the issue?

What motherboard is in the PC they should have the right software for your fans and temp?

The EVGA nForce 680i T1 edition is the motherboard im using now

With OCZ 2048MB PC8500 DDR2 1066mhz Nvidia SLI ready memory


I just ran the memory diagnostic tests and while running it cutoff, just like it has been during the installs. It did this on both occasions. So im gunna properly assume that I need to get RAM clocked at lower speeds, or is there anyway to lower the speed at which my RAM is clocked at?

Yep sounds like a RAM issue for sure or over clocked out to far