Hi all, Maybe one of you guys can help me out here are my specs: (its a new build btw) Asus Sabertooth 990FX R2.0 MB (latest bios) AMD FX-9590 CPU Corsair TX850 PSU XFX R7 250 Core Edition Passive GPU Kingston KHX 1600C9D3K4/8GX 1.65V (4 x 2 GB) RAM Samsung 840 EVO 120GB SSD Intel 40GB SSD Cpu, vrm and nb are all costum watercooled with a XSPC RX480 rad. Temps Idle cpu = 25c to 28c at full load p95 its 52c my vrm idles at around 24c to 28c at p95 its 53c nb stays pretty much at 33c to 35c. So cooling should be good enough. System = default setting no OC. Whenever I turn on my pc cold boot) it boots fine NO error led warnings nor error sound warnings I enter w7 desktop and 2 to 3 sec later it reboots after that I can use my pc without issues. Now im also using dual boot on a seperate ssd with Linux Ubuntu 12.04 LTS the same happens when im at the desktop as with w7...it reboots. So looking at windows event viewer is kind of mute now since it happens with ubuntu as well (and I erased the w7 ssd) I have no clue what is going on...this is what I have done so far: Removed the w7 ssd and just use my ubuntu ssd no change... Reinstalled W7 and nothing changed... Reinstalled Ubuntu 12.04 LTS and nothing changed... Used Memtest for 7 hours and nothing changed...(no errors). I did a CMOS reset no change... Updated my BIOS to the latest succesfully but no change... I chose to use D.O.C.P. in order to let my ram run at its native speed (9-9-9-27) no change... Ive removed 2 out of 4 ram modules to see if the problem insists which it does... Should I manually set the ram timings if yes how please know im using 4 x 2gb modules, im not realy into OC'ing the cpu, only want to change the ram timings to its correct spec if needed otherwise its default setting at 1333mhz. Some say its normal that asus motherboards boot twice BUT is it normal to reboot while you already are at the w7 or ubuntu desktop for approx 2 or 3 sec? Thing is after the second boot I can do whatever thing I want to no problems as of yet...because this could be a sign for further more pertinent problems... Some say to up the vcore a bit slightly increase the voltage but my cpu is already factory OC thats why I bought it so I wouldnt have to fiddle with the bios settings.... Hopefully some one can help me, it seriously drives me nuts. Thanks in advance.