PC with ASUS Z87-Deluxe Motherboard does not return from standby – Problems and Solutions

This is a problem that occurred with my PC, that has an ASUS Z87-Deluxe motherboard, Intel i7 processor 4770, 32 GB Corsair Dominator RAM (8GBx4) DDR3 PC3-12800 240-pin CMP32GX3M4X1600C10, and is with Windows 10 installed.

The trouble is the following: when putting the computer into standby (manually or automatically, for unused time) he can't return, automatically restarting. How Windows 10 uses a hybrid standby system, where the contents of the RAM are written to disk in case of power failure or something, it turns out that the computer even goes back to the state it was in, but it is still a problem.

This problem had already occurred before, but as I didn't write down the solution at the time, when it happened again I had already forgotten and had to do a series of tests again. So this time I will leave it well registered.

I tried several changes to the BIOS setup, that was not in overclock, except for the option to use the timings Memory XMP, because it is necessary to use it in its standard frequency of 1600 MHz, which is not officially supported by Intel. I tested the various energy saving options, more to solution was to change the BCLK FREQUENCY option from “Auto” to “100.0”. With this change the PC started to enter and exit the standby mode normally, without any tangle.

I didn't quite understand why it happened, after all the “Auto” also maintained the BCLK at its default frequency of 100 MHz. The only difference I noticed with the system on is that with the option in Auto, the CPU-Z indicates the frequency in 100.16 MHz, whereas when I put it specifically in 100.0, o CPU-Z mostra 99.98 MHz.

CPU-Z indicates a lower frequency when the adjustment is made manually to 100 MHz.

CPU-Z indicates a lower frequency when the adjustment is made manually to 100 MHz.

Maybe I should put the BCLK manually in 100.18 to see what happens and see if the problem is really these 0,18 MHz more or if the Auto option has some other unexpected effect, but I haven't even gotten excited to do that yet. And anyway, 0,2% performance is not going to make a big difference.

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