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I5 750 OC problems

post #1 of 2
Thread Starter 
Problem: OC'd machine 1 year ago to 3.6Ghz, stable. Two weeks ago, Blue screen of death. Found bad ram stick, replaced. Also lost OC Since I was in BIOS, I figured it would be a good time to update BIOS. Installed latest version AMIBIOS A72, which has the new DIMM Offsets. I had recorded all my BIOS settings and test results when I did the the 3.6 OC twelve months ago. After flashing the BIOS, I proceeded to re-enter the values for the 3.6 Ghz OC. F10, OK and the machine would not boot. Thought I made a mistake. Reset BIOS to default, re-entered valuse again, double checked, and again NO BOOT. Made several new adjustments to Vcore, VTT with no success. Started from scratch with basic settings, new configuration of FSB and multiplier, manipulating Vcore, VTT, PLL back and forth with the same results...NO BOOT. Thought maybe the RAM was still bad and run Memtest86, 8 passes with no errors. Note: Default BIOS and Turbo settings work fine.

Can't understand what has happened. Any help would be appreciated.

Test results when OC'd to 3.6Ghz:

PS..I'm pretty new at over clocking.
Combyy
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 750 @2.67 EVGA P55 SLI LGA 1156 Radeon 4800 Series (RV770) G-Skill PC-12800 
Hard DriveOptical DriveOSMonitor
2 x WD Caviar Black 640GB Samsung 22x DVD Windows 7 Ultimate Asus VW246H 
KeyboardPowerCaseMouse
LogitechG110 Modextream Pro 500 Coolmaster HAF932 Logitech G500 
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Combyy
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i5 750 @2.67 EVGA P55 SLI LGA 1156 Radeon 4800 Series (RV770) G-Skill PC-12800 
Hard DriveOptical DriveOSMonitor
2 x WD Caviar Black 640GB Samsung 22x DVD Windows 7 Ultimate Asus VW246H 
KeyboardPowerCaseMouse
LogitechG110 Modextream Pro 500 Coolmaster HAF932 Logitech G500 
  hide details  
Reply
post #2 of 2
Thats weird. Try booting at a very small overclock (just anything that is higher than stock) and try booting with only one ram stick installed. Then try the other ram sticks one at a time. Then if it's not stable at all, try booting at stock and running a stress test. If it's stable, yiu probably have a bad motherboard or cpu.
    
CPUMotherboardGraphicsRAM
Core i7 920 4ghz 1.25v Evga Classified E760/E762 Evga Gtx 480 + Galaxy GTX 480 SLI 6GB Corsair Dominator GT 1600mhz 
Hard DriveOSMonitorKeyboard
Crucial C300 256Gb, Samsung 7200rpm 320gb, 2x W... Windows 7 64-bit Home premium Dell U2410 1920x1200 Wireless Logitech 
PowerCaseMouseMouse Pad
Antec Quatro 1200w Corsair 800D Razer Death Adder Office Depot thingy 
AudioAudio
Asus Xonar STX Sennheiser HD555's 
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CPUMotherboardGraphicsRAM
Core i7 920 4ghz 1.25v Evga Classified E760/E762 Evga Gtx 480 + Galaxy GTX 480 SLI 6GB Corsair Dominator GT 1600mhz 
Hard DriveOSMonitorKeyboard
Crucial C300 256Gb, Samsung 7200rpm 320gb, 2x W... Windows 7 64-bit Home premium Dell U2410 1920x1200 Wireless Logitech 
PowerCaseMouseMouse Pad
Antec Quatro 1200w Corsair 800D Razer Death Adder Office Depot thingy 
AudioAudio
Asus Xonar STX Sennheiser HD555's 
  hide details  
Reply
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