Hi friends, I just got my AsRock x58 extreme off newegg which arrived at my home yesterday. It gave me headache from begining, i tried a lot but it never boot up, but finally somehow it boot up. but again today morning it stopped working, suddenly my PC hang and when I shut it down and power on it gave me same problem as before. now let me describe what problem is,.. Problem is with mobo for sure, there is debug LED at right-bottom corner, when mobo. was working for today, it light up fine, showing AA which is normal. but now, it even not lighting up, ( no error or anything , just it doesnt display any number or code ), when i press power on switch tht LED flashes up for a moment and nothing it turns off..however CPU still powered on, fan is running, but no display on debug led, no beeps, no display on monitor!! i tried a lot ( really over 10 hours ) to solve this prob. but I didnt get it solved so i m asking your help ppl. some of you have this mobo. so please help me out to solve this. My system spec. CPU : i7 920 D0 mobo : AsRock x58 extreme Bios 1.30 RAM : 6GB G.SKill DDR3 1600 Video : QuadroFX 1400 PSU : Antec NeoPower Blue 650w Cooler : CoolerMaster V8 I tried following which didnt work.. 1. Used single stick of RAM instead all modules, tried all slots one by one . 2. changed PSU too. 3. removed CM V8 heatsink and used stock cooler. 4. checked MB and CPU temp. it was fine . 36C idle for CPU and 40C for mobo. ( Checked when mobo. was working for few hours ) 5. Cleared CMOS many times, changed CMOS battery as well. 6. Removed and reinstalled CPU 4-5 times. 7. tried my HD4850 and HD4890 also, 8. removed mobo. from pc case and tested above things as well ( in case backplate could touching pc case ) 9. changed power cable of PSU. As I said, it was working for some hours, so CPU, video card and RAM is not dead, it must be mobo. because if any other components is dead or not working, then atleast it should power up that debug LED, while here debug LED is not working itself!! i m afraid it is dead?!!! because it was open box and there is no warranty on this . I hope if someone can help me to get it working.