Getting stuck in POST instead of restarting

Question

Hi guys.
I would appreciate some help here...
Whenever I apply (or at least try to) a setting in my BIOS menu, there is chance my mobo cannot handle it, which is fair and square.
BUT: Instead of rebooting and then rebooting again to say that my OC has failed or aomething like that to declare failure to apply settings, it just gets stuck before it posts! So here I am with a blank computer screen but with a pc which is apparently working... Of course no windows booting or HDD movement at all.. What can I do to fix this? I am tired of reseting the CMOS using the backplate button. Even though the SAVE SETTINGS menu is incredibly time earning in those cases, I dare say I am fed up with ClearingCMOS for a small mistake!!
What should I do?
Oh, I thought it was good to apply the lowest - close to auto - setting for some of the voltages in the cell menu. I guessed it would help not overdo it with pumping the voltages up for no reason. I have not OCed now, but until then I would like to check if this minimum 1.10 (a notch above the Auto setting) is OK.
Thank you in advance.

Answer 1

iraklisvel, I will post a screenshot from the mainboard's user manual, page 3-23:
[Click image to enlarge it]
As you can see, there are two procedures in case the system does not boot because of a failed overclock and I can promise you that you will save a lot of time if you clear CMOS instead of waiting for the the system to reboot a fourth time.
My suggestion is to save the last stable and your experimental settings in independent profiles under "USER SETTINGS" in BIOS.  These profiles are not erased when your clear CMOS and provide and easy and fast way to load a set of custom settings. 
To answer your other questions:
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1. Undervolting. When I apply 1.10Vcore instea of 1.11, the mobo hangs. It just does not POST. We all know that such a minor decrease in vCore would hurt anyone so bad right?
I had no problems undervolting my E6600 as long as the clock speeds matched the voltage values.
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2. Memory settings that are supposed to work 100% sure. Do you find it reasonable not being able to POST in ddr2 - 800 4-4-412 with 1066 modules? Because they actually do it on other mobos.
I had no problems to make a set of G.Skill F2-6400PHU2-2GBHZ run stably @4-4-4-12/2.1V on the P45 Platinum (@DDR2-800 of course).  Never tested with the Kingston HyperX KHX8500D2K2/2G memory I got though.
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3. Multiplier Setting. Not all of them worked in the BIOS that came with the mobo. I guess this was a mistake which was not mine, right? It got (not fully) fixed when I updated the BIOS.
Overclocking my E6600 to 400 MHz FSB x9 was no problem with a small voltage bump from 1.250V to 1.330V (EIST & C1E enabled).  450 MHz FSB Clock speed x 9 was a problem, however it worked with the x8 multiplier.  @500 MHz FSB the x8 multiplier became a problem but I could stabilize the system using x7. Maybe 500 MHz x 8 is possible with a couple of voltage adjustions.  But testing these things takes time and I did not have that time yet.
The bottom line is:  The stability of a multiplier depends on a bunch of other settings as well.  I don't know under what conditions you have tested the different multipliers. To be able to comment on more precise conditions, more details are needed to get a picture of what you actually tried to accomplish with certain settings.