WINDOWS 7, Quad Core, dual monitor
So while I was trying to find the answer to my black screen reboot without errors, I came across this thread. I have since fixed the problem, but felt I owed it to the community to come back and report.
My issue: after ten minutes or so after booting, my system would just shut off. No BSOD, no error messages, no reboot. Just turn off.
I first updated all drivers of course, USB drivers, Network Adapter drivers, Video drivers, basically everything. Did not change.
I ran CCleaner, and did every test it had, including a registry clean. Did not change.
I suspected my network adapter was the culprut, so I disabled it, and installed a wireless net work device. Did not change.
In one of these threads I came across the Event Viewer. (Type event viewer in the start menu, and read the errors that it produces)
This was the start to the answer. At least here there is an error log that you can review and hopefully gain a clue as to the source.
This error log is frustrating because it lists every warning and error that is produced, and often they are not very descriptive. (more on this later.
Finally one night I came home from work, and my house was cool, and I had to turn up the furnace. But before my house heated up, my computer was running great. No reboot. Once the house gained a certain temperature, the system shutdown started again.
Clearly I was hunting for a temperature issue, but all fans seemed to be working normally. I downloaded a program that monitors the temperature of the CPU. Everything was normal.
I was pretty bummed out because I thought I was on the right track.
I went back to the Event Viewer to keep looking, and that's when I found one error right in the middle of 20 or 30 other ones. It was the first time I had ever seen this one. 'System has restarted unexpectedly due to an overheated graphics card.'
So simple. Why had this error failed to appear before? I don't know.
I have an ATI Crossover dual graphics card. It is two cards that run in tandem, hooked up with a crossover cable. I inspected the cards, and noticed one was VERY hot. It actually had to wait for it to cool down before I could remove it. I plugged my two monitors into the other card that was not running hot, and everything is bliss now.
The moral of the story is that if your computer is turning off without warning, it is almost certainly not the OS, or a software related issue. Even if there is a faulty driver, it will usually produce an error, and will almost always make the machine reboot.
When there is a heat related issue, the system turns itself off as a protective measure against fire. This makes a lot of sense.
Anyhow, I hope this post helped somebody fix their issue. I have spent a week trying everything I've read on this board to fix the problem, and I guess it paid off.
Thanks.
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