For the machine that has an issue sleeping I would try experimenting with different lid settings in Windows. Try having it not go to sleep and see if that does anything. If it's a problem with the display being unable to restore after being turned off you could also test this by having the power settings stay on but turn off the screen, then try to wake it.
For the machine with the RAID configuration, try a single drive in each slot to see if that makes a difference. Perhaps one of the drives or one of the slots is causing it to choke and trying different combinations will help you test both possibilities.
A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station…