hi all
i have unlocked my phenomII 550be to X4b50
its stable and have no errors with programs or windows,
..but
strange thing happen from From time to time
when i press power button the computer begins to run and fans also for 2 or 4 secs then every thing stop and ihave to unplug the computer from electricty for 20 sec then everthing goes ok
why these happening and how can i evade this without turn off core boost , unless there is no other way

my computer spec
cpu X2 550 be unlocked to x4 b50
motherboard GA-880GM-D2H
RAM 4.00 GB kingston 1333mhz
power supply 400 watt cooler master
os 7 64 bit
hard disk wd 500 aaks

Turn off the other cores, and let it be how its supposed to be for a few days and see if it continues to happen, if it doesnt, it probably has to do with those cores being on.

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i7 2600K - Asus Maximus Extreme-Z - G.Skill DDR3 2133 CL9 - MSI 5870 - Corsair 1200w PSU - 2 x Western Digital Raptors Raid 0 - Swiftech Apogee XT Water Block - Swiftech MCP655 Pump - 120mm Quad Rad - Windows 7 - Ubuntu x64

5311Mhz Validation

I have a big problem with Phenom II Quad Core. I have Demo of Arcania and performance is very low!

Arcania uses 4 cores, but not mine Quad Core :/

I have Windows XP 32Bit, but on Windows 7 64Bit problem occurs too. My motherboard is MSI 770-G45 - BIOS 10.2. My processor is x2 550 unlocked to B50 (on not unlocked processor problem occurs too). Graphic: 9800 GT MSI.