(Not sure whether to post this in General Hardware or General Software so please feel free to move if appropriate)
I've been trying to get my system to go into sleep mode properly. Up until today (i.e. for the past N years) I couldn't get sleep mode working. I'd select Sleep from the Start menu and Windows would dutifully go to sleep but the system itself wouldn't. All fans would continue running and hitting Space on the keyboard would wake it up. So this doesn't really count and being properly asleep. I want all fans off and the system to just keep the memory so it can wake up properly.
I did some research and determined that there was a couple of jumpers on my motherboard which control this:
http://dlsvr01.asus.com/pub/ASUS/mb/socket775/P5N-E%20SLI/e2968_P5N-ESLI.pdf - Page 27
Both "USB device wake-up" (3-pin USBPW1-4, USBPW5-8) and "Keyboard power" (3-pin KBPWR) These were in their default +5V configuration. I switched all 3 jumpers to +5VSB.
I also checked the BIOS to determine what power states were supported and it was configured for S1&S3. (My motherboard only supports S1 and S3) I decided that S1 wasn't relevant and that I only needed S3 so I set this to just S3. (I'm not sure on that decision as I don't fully understand the difference between the two power states and which of those states relates to the Windows Sleep)
OK. So with those changes made I started the system then selected Sleep from the Start menu at which point the system went to sleep perfectly. Windows 7 in sleep mode, all fans powered off. Exactly what I was hoping for. Hitting Space on the keyboard woke the system up and all was good. That was until I hit Sleep again. Here's the problem....
The system wouldn't sleep, the screen goes black and Windows 7 appears to be in sleep mode but the fans don't spin down. Hitting Space on the keyboard has no affect, and neither does hitting the power button on the from of the system. My only option is to reset. When the system comes back my SSD isn't recognized by the BIOS and thus the system wont start. To get the SSD back I have to fully power off the system and start it up again. Now the SSD is recognized and things start up normally. (Well, Windows complains a bit but no big deal)
So my questions are:
1/ Should I have S1, S3, or S1&S3 configured in the BIOS?
2/ Why would Windows not sleep properly after having been woken from sleep mode?
3/ Why is my SSD missing after a hard reset of the system?
Thanks in advance.