When the machine is turned on, both drive LEDs are off when the drives are not in use. The LED on the Benq is off when the machine is off. I hadn’t noticed before, but the K-Hypermedia LED glows orange when the system is powered down. Each of these drives has an activity LED that flashes green to show activity when the drive is in use. It has two optical drives - a Benq CD/DVD reader and a K-Hypermedia 52x24x52 writer. The power LED stays on as I have said, but there is another even more mystifying thing. If I shut down the computer it goes through the normal sequence for shutdown and turns itself off. The only way to get it to turn on is to press the start switch after which it goes through a full bootup to come back on line. Neither moving the mouse nor pressing any combination of keys on the keyboard will cause it to come up. The computer is definitely not in standby or hibernate mode. Given the troubleshooting I have done, it is not the power supply, it is not a case short nor is it case related since when I assemble a computer on the bench I have a momentary ON switch on a short length of wire to turn the computer on and an LED on a similiarly short length of wire to monitor the status of the power. That means it is getting power somehow from the hibernate supply - but how? While on the bench, I stripped it down to only a graphics card and hard drive - with no difference. I pulled it out of the case and assembled it on the bench, same result, the power LED stays on when the computer is shut down - not set to standby or hibernate, but a full shutdown. ![]() Thinking it might be power supply related I swapped out the Thermaltake Pure Power 420w that was in the case with a new Thermaltake Pure Power 480w, which just happens to be the power supply in the IC7-G system that is not misbehaving. I have checked and double checked - even comparing the plug wires with the one that is not misbehaving - and can not see where the two are different in any way. Both machines are running Windows XP Pro with SP2 installed. I have another one in the laboratory at this moment, also working just fine, but with the power LED not exhibiting this strange behavior. The mother board is an ABIT IC7-G which I have used to assemble three computers, so it is a motherboard that I am very familiar with. But the front case power LED stays on when the computer is shut down. I can go on net, run programs, read and write CDs, execute Windows functions etc. The computer is working - in all respects that I can see. I have no idea what it could be at this point.I have run into the strangest computer problem I have ever encountered in all of my years messing around with computers. Issue is still occurring so let the record show that the GPU was not the issue. Update: RMA'd the GPU and got a replacement. Flare X 2x8gb 3200 cl14 (running XMP profile).ASUS ROG Strix RTX 2070 Super (drivers up-to-date).MSI B450 Gaming Pro Carbon AC (Latest Bios 7B85v1B ).Could just be an extremely poor timed coincidence but might as well mention it. I should note that this issue only appeared once I installed my new GPU, even though I don't know how that would affect the CPU light. I have also re-set the ram, unplugged/re-plugged both the CPU 8-pin and mobo 24-pin, and reset the CMOS a couple times all to no avail. I have re-applied TIM to the CPU and re-set it. It also doesn't run into any problems once booted (everything detected, no crashes, games run etc.). ![]() I always fix it by hitting the restart button on my case once and it then proceeds to boot normally. ![]() Whenever I cold boot my PC, the mobo displays a solid red CPU light and doesn't post (the fans are spinning and lights are on). So I'm running into a bit of a weird issue.
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