I have already removed the video driver in safe mode, rebooted and reinstalled the video driver from files that I got directly from NVIDIA.com. I'm still having the problem.
Okay for the thoroughness of this topic, lets get the video cards model number in this thread. If you can supply that in your next post that would be greatly appreciated.
Once I have that, we can then diagnose your problem, you boot up the computer, the screen blinks, then turns off.
As I read this statement, I look at the boot process of your motherboard BIOS, before it hands off the boot control to your hard drive and its boot sector.
If the computer boots up and does not go as far as the hard drives boot sector, then we have a motherboard issue.
Lets stick with this possibility for a bit.
At this point, no drivers are loaded into memory.
The system is booting off of pre-written code flashed into the motherboard's BIOS EEPROM chip, this is what boots the system and sends the command to the CPU, where the control is taken over for a bit, the CPU processes the data and starts the rest of the computer up, thus taking commands from the BIOS ROM.
It takes an assessment and inventory of installed hardware, keyboard, mouse, then it checks for a boot loader until it finds one, usually a bootable cdrom/dvdrom or hard disk.
As it reads from the boot loader, it then starts to load system and hardware drivers needed into RAM, such as your RAM sticks.
Until the operating system loads and takes control.
Okay, if your hardware fails during POST, this is an indicator that your PSU can not supply enough power to power up a hardware device, such as a video card.
There could be a short somewhere in the system, if it happens at this stage, the system powers its self off to hopefully prevent damage.
What is a short?
This can be a number of things. I will run down a short list here.
Motherboard is grounded out to system case in a circuit that is not meant to be grounded. Cause: motherboard stand offs are making contact with a circuit on motherboard.
Expansion card mounting bracket is making contact with motherboard.
Wires sometimes make contact with hot metal heat sinks and rubber coating is burned through allowing copper wire inside to short out.
Wires can sometimes come in contact with hot electronic components, such as diodes, resisters or voltage regulators, and the rubber coating again is burned through, causing a hidden short.
Power supply may not have enough power to power up all hardware installed, power supply shuts down from exertion, over heating.
Faulty memory (RAM) can cause issues at this point, because that is where everything is sent by the CPU, before it is executed and carried out and cycled through the system BUS and the network of circuitry found on the motherboard. You know those things we call circuit traces that run endlessly around the motherboard like the streets of New York City?
If the system makes it to the hard drive and the boot loader, then shuts down or restarts once drivers are loaded or in the process of loading into RAM, there would now be the possibility that a driver is corrupted and causing the system to do something that is not correct, it may cause an IRQ conflict or access a block of memory or a memory address it does not belong in, this is called a buggy driver in some instances, or a corrupted one.
Hardware such as video cards can start to heat up now, because their drivers have loaded into memory, heat can cause hardware to fail or shut down to avoid possible damage.
The processor starts to heat up now, because it has a lot being thrown upon it at this point. Its clock cycles has increased tremendously and heat now becomes an issue.
Now that we are giving control to the operating system, we hope the operating system demands that our hardware plays nicely with each other, that there are no IRQ conflicts, that one request does not try to access a memory address already being used by another, causing a crash, like when two automobiles try to occupy the same parking space at the same time. (disaster!)
Again, buggy drivers can cause this to happen, buggy drivers are like a drunk trying to drive a car and keep it on the road. (disaster!)
Hardware can have buggy firmware flashed into its ROM and that can cause issues.
So you see there is a lot of possibilities here.
I know I kind of went over board here, but I have found that when I was learning to trouble-shoot computers I needed a through explanation of the process involved, before it started to become clear to me.
Edited by MrBruce1959, 12 September 2010 - 04:29 PM.