Hi.
Yesterday I put together a new computer to replace one that was damaged in transit. The new one uses the hard disk and video card of the old one, but all the other parts are new (including the case).
The system booted fine when I first switched it on, and I was able to use it for about half an hour before it abruptly switched off. When I then pressed the power button the system started up for about a second and then shut off again.
Now, this morning, I decided to try again. When I turned it on, the system booted fine! I was again able to use it for about 20-30 mins, this time installing the drivers from the motherboard CD, and then the computer shut off again.
The computer consists of:
CPU: Intel i5 750
Motherboard: Gigabyte GA-P55-UD3
PSU: Corsair VX-550
RAM: Corsair XMS 3 4Gb
Case: Antec VSK-2000 (I mention this because it includes a fan)
Video card: XFX ATI Radeon 4870 (Salvaged from old computer)
Now, three details come to mind. First: I got someone in to examine my old computer, and to cut a long story short he concluded that the video card was busted because on replacing it (and other busted parts) temporarily, the old computer was able to display stuff on the screen when before it couldn't. However, when in my new machine the video card has worked fine.
The second thing is: the screws I used to secure the motherboard came from the case - none were packaged with the motherboard. The manual did not mention using washers to separate the screws from the motherboard, and a brief google gave me the impression that this kind of motherboard actually uses the screws to ground itself.
Finally, the motherboard wasn't totally, completely flush against the supports. Some of the motherboard holes were sticking up and others were exactly resting on the holes. I screwed them all down. I've since been wondering if this slight bending of the board would cause these problems...
Any ideas? I would have thought it would be the PSU, but I was specifically recommended to get a Corsair one because they're supposed to be reliable...
Yesterday I put together a new computer to replace one that was damaged in transit. The new one uses the hard disk and video card of the old one, but all the other parts are new (including the case).
The system booted fine when I first switched it on, and I was able to use it for about half an hour before it abruptly switched off. When I then pressed the power button the system started up for about a second and then shut off again.
Now, this morning, I decided to try again. When I turned it on, the system booted fine! I was again able to use it for about 20-30 mins, this time installing the drivers from the motherboard CD, and then the computer shut off again.
The computer consists of:
CPU: Intel i5 750
Motherboard: Gigabyte GA-P55-UD3
PSU: Corsair VX-550
RAM: Corsair XMS 3 4Gb
Case: Antec VSK-2000 (I mention this because it includes a fan)
Video card: XFX ATI Radeon 4870 (Salvaged from old computer)
Now, three details come to mind. First: I got someone in to examine my old computer, and to cut a long story short he concluded that the video card was busted because on replacing it (and other busted parts) temporarily, the old computer was able to display stuff on the screen when before it couldn't. However, when in my new machine the video card has worked fine.
The second thing is: the screws I used to secure the motherboard came from the case - none were packaged with the motherboard. The manual did not mention using washers to separate the screws from the motherboard, and a brief google gave me the impression that this kind of motherboard actually uses the screws to ground itself.
Finally, the motherboard wasn't totally, completely flush against the supports. Some of the motherboard holes were sticking up and others were exactly resting on the holes. I screwed them all down. I've since been wondering if this slight bending of the board would cause these problems...
Any ideas? I would have thought it would be the PSU, but I was specifically recommended to get a Corsair one because they're supposed to be reliable...