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ASUS CPU/NB Voltage Settings

post #1 of 5
Thread Starter 
Hello,

I have caused my computer to stop booting this morning. I updated to the latest BIOS, which went well, but while setting the voltages manually, I messed up. I left the CPU/NB VOltage Mode set to "Offset" and change the setting to 1.35, but it only changed to 0.7 (red). I was moving too quickly to notice the mistake and I saved/exited. The settings should have been "Manual" (not offset) and then 1.35 would have worked, but the maximum in offset mode is 0.7, which adds 0.7v to the 1.3v its already set at. Anyway, the computer will not boot, and I am try to decide what components I damaged:

The computer will turn on, but it does not post and the CPU never gets warm (completely cold). The memory also stays cold. I reset the BIOS by pulling out the battery and moving the jumper back and forth, but this did not change the behavior. I pulled the memory, but nothing changed. Any advice is greatly appreciated. Thanks...
post #2 of 5
Adding 0.7v to an alreay 1.3v only gives you 1.4v for cpu/nb - and while that is pretty high, it isn't really that high to suddenly cause your PC not to boot. That is unless your mainboard has failed while trying to provide 1.4v to your cpu/nb?

FWIW, I have an older ASUS 790fx mainboard, and have tried cpu/nb voltages up to and beyond 1.5v without any damage and it continued to boot - this is why I don't think 1.4v would really cause much of a problem.

My initial advice would be to remove the cmos battery and leave it out for a minute before putting it back in to see if it will post. But you said you already did this and it still wont post?

My next thought would be a faulty PSU. Have you got a spare you can try? Is there a fuse or a fuse/trip switch on your PSU that has been blown/tripped? Are you getting and beeps or light indicators on your mainboard? Can you see the PSU fan start when you switch the PC on? Does your PC have any light indicator to show it is on?

If the PSU is working, then try this - remove everything from your mainboards (and I mean everything) and then only put the CPU and 1 stick of memory back in and connect your keyboard and a monitor and PSU (no odd, dvd, speaker, use items etc), then boot and see if it posts.

If it does post, shutdown, add your 2nd stick of memory, boot and see if it posts again.

Repeat that until all sticks of ram are tested and then continue to repeat the process untill all other components are connected and tested.

The moment it doesnt post you know exactly which component is causing the problems.
Crimson Basilisk
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Crimson Basilisk
(25 items)
 
  
CPUMotherboardGraphicsGraphics
Intel i7 2600K @ 5.1Ghz AsRock Extreme4 Gen3 Palit GTX 680 Jetstream 2GB Palit GTX 680 Jetstream 2GB 
RAMRAMHard DriveHard Drive
G.Skill F3-12800CL9D-8GBXL G.Skill F3-12800CL9D-8GBXL Sandisk Extreme 120GB SSD Sandisk Extreme 120GB SSD 
Hard DriveOptical DriveCoolingCooling
WD Caviar "Black" 1TB SATAII LG WH14NS40 Blu-ray Burner XSPC Rasa CPU (Acetal) Black RX360 Triple Fan Radiator 
CoolingCoolingOSMonitor
XSPC DDC Two BayRes BMaverick Laing DDC (MCP350) Windows 7 Ultimate x64 Philips 201B 21" CRT 
MonitorKeyboardPowerCase
ViewSonic VX922 19" LCD Diamond Digital Black Antec True Power 750w Antec LanBoy Air Red 
MouseMouse PadAudioOther
Epic Gear Meduza (By GEIL) Steel Series QCK+ XL Asus Xonar DX ROCCAT Kave 5.1 Surround Sound Gaming Headset 
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post #3 of 5
Thread Starter 
I'm sorry, I believe it changed it from 1.39v to 1.46v. I should have specified the hundredths value.

I did remove the battery and move the cmos jumper. I left it out for about 30 minutes this time around just to make sure. It still did not post.

The PSU is testing out perfectly, but that doesn't always mean it's not the problem, so I swapped it out. It did not help the situation. The power supply fan spins up on both power supplies.

The only light on my Motherboard is the power light, which has remained green through this entire process.


I have taken the following steps since the first post:

- Removed the Motherboard from the computer.
- Removed the battery from the Motherboard and set the cmos jumper to the reset position for approximately 30 minutes.
- Replaced the jumper and battery.
- Placed the board outside of the case and grounded it with a strap to the computer case.
- Left the power supply in the case and attached the 24 pin and 4 pin power connectors to the motherboard.
- Installed the processor but left the heatsink and fan OFF.
- Pluged in the case speaker in order to hear post beeps.
- Left memory, peripherals, video card, etc. unplugged. The only items attached were the Processor, Power Supply, Ground Strap and Speaker.
- I turned the Power Supply on and jumped the power switch jumper with a screw driver. The system powered on, but did NOT post.
- I held two fingers on the Processor to ensure that it did not heat up, due to the heatsink and fan being disconnected.
- The Processor remained completely cold and never changed temperature at all.
- The north and south chips warmed up as normal.


I am pretty sure the processor is a problem, due to in remaining cold. That may be falso though. Is it possible for the motherboard to keep voltage from flowing to the processor? Maybe the problem is only the motherboard. The memory is completely out of the picture at this point. I have the memory, processor and motherboard setup to RMA through Newegg, but I feel odd about RMAing all three pieces. Any other advice is greatly appreciated!
post #4 of 5
Have you tried swapping CPU? If you have and it still won't post - it's RMA time then I recon.
Crimson Basilisk
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Intel i7 2600K @ 5.1Ghz AsRock Extreme4 Gen3 Palit GTX 680 Jetstream 2GB Palit GTX 680 Jetstream 2GB 
RAMRAMHard DriveHard Drive
G.Skill F3-12800CL9D-8GBXL G.Skill F3-12800CL9D-8GBXL Sandisk Extreme 120GB SSD Sandisk Extreme 120GB SSD 
Hard DriveOptical DriveCoolingCooling
WD Caviar "Black" 1TB SATAII LG WH14NS40 Blu-ray Burner XSPC Rasa CPU (Acetal) Black RX360 Triple Fan Radiator 
CoolingCoolingOSMonitor
XSPC DDC Two BayRes BMaverick Laing DDC (MCP350) Windows 7 Ultimate x64 Philips 201B 21" CRT 
MonitorKeyboardPowerCase
ViewSonic VX922 19" LCD Diamond Digital Black Antec True Power 750w Antec LanBoy Air Red 
MouseMouse PadAudioOther
Epic Gear Meduza (By GEIL) Steel Series QCK+ XL Asus Xonar DX ROCCAT Kave 5.1 Surround Sound Gaming Headset 
Other
Sennheiser hd555 
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Crimson Basilisk
(25 items)
 
  
CPUMotherboardGraphicsGraphics
Intel i7 2600K @ 5.1Ghz AsRock Extreme4 Gen3 Palit GTX 680 Jetstream 2GB Palit GTX 680 Jetstream 2GB 
RAMRAMHard DriveHard Drive
G.Skill F3-12800CL9D-8GBXL G.Skill F3-12800CL9D-8GBXL Sandisk Extreme 120GB SSD Sandisk Extreme 120GB SSD 
Hard DriveOptical DriveCoolingCooling
WD Caviar "Black" 1TB SATAII LG WH14NS40 Blu-ray Burner XSPC Rasa CPU (Acetal) Black RX360 Triple Fan Radiator 
CoolingCoolingOSMonitor
XSPC DDC Two BayRes BMaverick Laing DDC (MCP350) Windows 7 Ultimate x64 Philips 201B 21" CRT 
MonitorKeyboardPowerCase
ViewSonic VX922 19" LCD Diamond Digital Black Antec True Power 750w Antec LanBoy Air Red 
MouseMouse PadAudioOther
Epic Gear Meduza (By GEIL) Steel Series QCK+ XL Asus Xonar DX ROCCAT Kave 5.1 Surround Sound Gaming Headset 
Other
Sennheiser hd555 
  hide details  
Reply
post #5 of 5
Thread Starter 
Thanks for the help! I'm going to RMA everything at once and just start over. Newegg is good about things like this. I appreciate your help!
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