Have you performed a CMOS clear? Sometimes the defaults will get it posting and you can tweak it form there. CyberPower might have given it some hard memory timings, or higher FSB speed which might be wreaking havock on the CPU.
Couple of ways to do that:
If you can get your machine to boot again when you try later, take a look at step #1 first: (Since this it's just a software setting that doesn't require you to open anything, warranty should not be an issue)
1) If you can get it to boot at all, you can go into the BIOS and select the option to load the default settings. Or even better, choose 'fail-safe settings' if you see it listed. That way the computer uses the most conservative settings for memory timing and such which tend to be a little slower, but if you find that it does work that way, then at least you know it's a timing issue and you can tweak the settings more to find the optimal speed/reliability zone.
2) If it doesn't boot, you can reset the CMOS to the default values by doing either of the following:
- Bridge the CMOS reset jumper on the motherboard, if you know which one it is
- Alternatively, unplug your PC from the wall, temporarily remove the CMOS battery from the motherboard, pressing and holding the power button a bit to drain any residual charge that might still be there, then after a bit reinsert the battery and plug the power back in.
As Leiden suggested, it's definitely possible that they went a little to gung-ho with memory timings or the likes, trying to squeaze another smidgen of speed out of it.
But it could even be as stupid as a misconfiguration by the assemblers -- there are memory modules available in a huge range of voltages, and if they mismatched the DIMM's with the motherboard (unfortunately a lot easier than one would hope) you can get a very unstable system.
Keep in mind, they don't call it the bleeding edge for nothing. :-/
Couple of other thoughts:
- Is it easier to start the machine if it has been off for a while? If so, it might be an overheating problem
- Does it make a difference if you cut the power to the machine altogether first?
- Did you check that all the fans (and especially the CPU fan!) are spinning smoothly? Bad fans can trigger system warnings, which can prevent some systems from starting to minimize the chance for hardware failure due to overheating