Will Computer fail to start when it's cold?
Will Computer fail to start when it's cold?
I assembled this system about a year ago, and it has performed well so far. I rarely use it, mainly relying on my laptop. However, a few weeks ago it failed to start. After experimenting—disconnecting components, pressing the power button—I discovered that holding the power button while toggling the power supply switch would initiate a boot. Once that happened, it operated normally for several hours.
The following day or shortly after, it still wouldn’t start. I gave up and switched to my laptop. But after waiting 5 to 10 minutes, it managed to boot again, only requiring the power button press. That same day I updated the BIOS and, over the weekend, turned off the computer without any issues.
On Monday morning, my machine failed to POST when needed for work. I waited for it to start, but after about 25 minutes it remained unresponsive. Trying the old method—pressing the power button while flipping the switch—I also encountered failure. Further checks included clearing CMOS and testing RAM modules in slots A2 and B2, but nothing resolved the problem.
Recently, another complication appeared: the computer took an unusually long time to POST, and when it finally did, a yellow LED lit up on the motherboard. I fixed this by downgrading the BIOS and enabling 'Memory Context Restore' in the BIOS settings. At first, it seemed to work—allowing me to shut down and restart without issues, even booting normally the next day (YAY ISSUE IS FIXED). But after a couple of days without use, it failed again. I tried disconnecting it from the wall overnight, but that didn’t help. Now it only POSTs if I hold the power button while toggling the switch or wait an extended period, which can take minutes to hours. When powered on, it works perfectly—CPU at 42°C, GPU at 41°C, everything functioning well. The challenge remains getting it to turn on.
My current specs:
Motherboard: TUF GAMING B650-PLUS WIFI
CPU: Ryzen 9 7900X
RAM: G.SKILL F5-6000J3636F16GX2-FX5 AMD EXPO 32GB (2 x 16GB)
GPU: RX 7800 XT
PSU: CORSAIR RM750e
[Links provided]
Welcome to the forums, newcomer!
Motherboard: TUF GAMING B650-PLUS WIFI
Updated BIOS later today and turned off the computer—it didn’t use it over the weekend.
Which BIOS version do you have for your motherboard? Asus has often been criticized for not living up to its reputation, with inconsistent board quality. You might try swapping parts onto another board to check if the problem continues.
By the way, consider borrowing or borrowing a well-built PSU with 850W from a friend or neighbor and see if you need to repeat the steps mentioned earlier.
Currently I'm using Version 3072. I've been running Version 3057 without any problems until I upgraded the BIOS to 3208, which didn't resolve the issue and actually made it worse. I reverted back to 3072. Yesterday a new BIOS version 3222 was posted, so I plan to try it out now to see if it helps.
I just tested Version 3222
What a surprise! Now I see a red light on the motherboard that I never experienced before, and it won’t happen even with my usual method that’s already working (pressing the power button while flipping the power supply switch).
Going back to Version 3072
So it’s not the power supply issue. I replaced my previous build with the EVGA SuperNOVA 550 GS and swapped the GPU (RX 7800 XT). Since it’s only 550W, I removed that GPU and used the built-in one for testing. With this power supply it performed the same. However, my old system uses DDR4 memory while this one uses DDR5, so I can’t test the RAM changes. After adjusting the BIOS settings today, I downgraded to version 3072, which was the version that let me boot and post using my method (pressing the power button while toggling the power supply). Now it doesn’t work, and I’m stuck with the yellow light. Pressing the power button does nothing—no fans, no QLED check light on the motherboard, nothing visible. The only indicator is a blinking green light near the BIOS flash. When I try the method (pressing the power button while toggling the power supply), the machine boots, the fans spin, and the motherboard light turns yellow. Also, none of the drives are connected—only the DP cable is plugged in. There are no USBs, keyboard, or mouse connected.