Computer help forum: My computer shuts down by itself randomly.

While you have a decent rated PSU, it still a Rosewill, very generic and bland PSU. Further, you say you can't ID it, it suppose to have on the PSU "itself" some decal or sticker explaining all its specs, that better be there. It's important to find out if this is a single or split-rail design. As a split-rail design offers its amps across at least 2 rails of voltages(+amps) and connected too much on one rail and NOT balanced may tip the overload ckt.. Further, the Rosewill is on the cheap side, so it may not be actually offering all it can be and if it is, it is too easily over-drawn to safety factors. If this is a single rail design then that too still needs to spread the load abit if possible to help maintain a balance. Alas, the GPU maybe a tipping point too. If it draws too much when it use and becomes more demanding will also be a demanding item for the PSU. It alone wants at 150W for itself and increases for OC modes or higher video ram setups. Better PSU are 80+ rated and thier make-up is better build to include wiring and heatsinks and better components able to handle the stress. That's sustained output under load tells the better PSU out there. It will only get worse as time goes by. So, what people are telling you is correct and for this to happen so soon, I lean on the PSU being a weak factor. Better cooling is very important, so be sure IN at the frt, and OUT at the rear, that good airflow is present. Does it make any difference with the side cover off, does it remain running longer?

tada ------Willy

If you're not sure, try PCWizard 2012...download, install, run and minimize it. The system temps including CPU and GPU should remain on the screen in the upper right hand corner of the screen after minimizing.

CPU temps (the chip itself) rise very quickly .... so watch the temps as you run a game or two.

VAPCMD

PSU model number should be visible on the outside of the PSU.