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Core i7 build

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Here's a weird issue I'm running into. I have sleep and hibernate both disabled. Monitors power off after 20 minutes, HDDs after 30. At night though I usually manually power off the displays so there's no monitor glow while trying to go to sleep. A couple of times now I'll come back the next day, power on the monitors - all fans seem to go to 100%, but the monitors never get a signal, have to use the power button to bring it back. During the day when I let windows power down the displays, there doesn't seem to be a problem.

Everything I'm finding on google seems to be related to problems actually resuming from sleep or hibernate.
 
Have you confirmed that all fans are going at max? It could just be the GPU fan. Next time it happens, open the case and try stopping the fans one by one. Also, try leaving the monitors on standby (not powered off) throughout the night. Also, is the machine hard locked? (i.e. do NumLock, CapsLock, etc toggle? Can you ping the computer?)
 
Well I found the culprit. It's not a windows issue, my secondary monitor (Viewsonic vx2035wm) doesn't like the 5850, or the other way around. The "display freeze" will happen any time the viewsonic is powered off and back on while the system is also powered on - even in BIOS. I don't have the foggiest idea how to fix that short of getting a different monitor or video card, so I guess I just won't be powering that monitor off anymore.
 
Well I found the culprit. It's not a windows issue, my secondary monitor (Viewsonic vx2035wm) doesn't like the 5850, or the other way around. The "display freeze" will happen any time the viewsonic is powered off and back on while the system is also powered on - even in BIOS. I don't have the foggiest idea how to fix that short of getting a different monitor or video card, so I guess I just won't be powering that monitor off anymore.

Have you tried hooking it up via VGA? It could be some sort of weird timing/sync with the TDMS transmitter.
 
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