- Mar 19, 2016
- 3
- 0
- 1,510
Problem: My computer will not power on. When I flip the switch on the power supply, the case fan in the front, the hard drive and the power supply fan power on, but the motherboard, CPU and video card do not. No lights on the motherboard light up, and no computer components that are powered through it power on, except the POST card (see below for details). The computer does not power on overall and I cannot even get to BIOS or a boot menu.
Background: I was upgrading to Windows 10 and installation repeatedly stalled at 25% overall, 86% through the file transfer process. I found instructions from those who had experienced that problem before that disconnecting peripherals and non-essential drives, then installing Windows 10, would take care of the problem. I did not completely power down the computer before disconnecting the SATA cable from the DVD drive. The computer has not been able to power on since. I have heard no beep codes because my motherboard does not have a speaker.
This was the first computer I built and it has worked well since 2013, with occasional hiccups like this.
What I have done/tried (in addition to everything listed here: http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems)
1- Completely power off the computer by disconnecting power and pressing the power button for 10 seconds, then resetting bios.
2- Removing all hardware except CPU and one stick of RAM, then repeating step 1.
3- Removed, then replaced the CMOS battery, then repeating step one.
4- Checked for short circuits on the board and between the board and the case.
5- Confirmed hard drive worked/data was intact by plugging it into another computer
6- Bought POST Test Card. It plugs into the motherboard and two lights come on (-12V and +3.5V), which the accompanying booklet explains mean that the motherboard is getting power. Nothing displays on the 4 digit display that is supposed to show error codes. There are no other signs of power to the motherboard.
7- Bought and installed a motherboard speaker to see if it gives beep codes. It does not.
8- Replaced CMOS battery, repeated steps above. No change.
During all of these steps I’ve worn one of those static bands that clips to the computer and your hand. It is possible but less likely that someone else in my household touched the exposed components and damaged them through static.
Next steps? I've exhausted what I know to do and would be very grateful for any insight you all have. What is the problem?
System specs:
ASROCK Z87 Extreme4 Motherboard
Intel Core i7-3770 CPU
16GB DDR3 RAM
Video card (NVIDIA, don't remember the specific model)
Corsair CX750M Power Supply Unit
2TB Western Digital Green HD
Windows 7 OS
Background: I was upgrading to Windows 10 and installation repeatedly stalled at 25% overall, 86% through the file transfer process. I found instructions from those who had experienced that problem before that disconnecting peripherals and non-essential drives, then installing Windows 10, would take care of the problem. I did not completely power down the computer before disconnecting the SATA cable from the DVD drive. The computer has not been able to power on since. I have heard no beep codes because my motherboard does not have a speaker.
This was the first computer I built and it has worked well since 2013, with occasional hiccups like this.
What I have done/tried (in addition to everything listed here: http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems)
1- Completely power off the computer by disconnecting power and pressing the power button for 10 seconds, then resetting bios.
2- Removing all hardware except CPU and one stick of RAM, then repeating step 1.
3- Removed, then replaced the CMOS battery, then repeating step one.
4- Checked for short circuits on the board and between the board and the case.
5- Confirmed hard drive worked/data was intact by plugging it into another computer
6- Bought POST Test Card. It plugs into the motherboard and two lights come on (-12V and +3.5V), which the accompanying booklet explains mean that the motherboard is getting power. Nothing displays on the 4 digit display that is supposed to show error codes. There are no other signs of power to the motherboard.
7- Bought and installed a motherboard speaker to see if it gives beep codes. It does not.
8- Replaced CMOS battery, repeated steps above. No change.
During all of these steps I’ve worn one of those static bands that clips to the computer and your hand. It is possible but less likely that someone else in my household touched the exposed components and damaged them through static.
Next steps? I've exhausted what I know to do and would be very grateful for any insight you all have. What is the problem?
System specs:
ASROCK Z87 Extreme4 Motherboard
Intel Core i7-3770 CPU
16GB DDR3 RAM
Video card (NVIDIA, don't remember the specific model)
Corsair CX750M Power Supply Unit
2TB Western Digital Green HD
Windows 7 OS
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