I've had this computer for about 5 months, and it used to boot up in 3-5 minutes or sometimes needed a second attempt to turn on. I left it alone for a while, hoping the issue would resolve itself, but it's gotten worse over the last couple of months. I've updated the BIOS, unplugged and reconnected everything, and run diagnostics, but nothing showed up as an issue. Initially, it seemed to work when it got warm, so I sent the power supply for servicing, but they found no problems. I've also sent the motherboard, processor, and RAM for inspection individually, and they reported no issues. Now, even after waiting an hour, my PC won't turn on; the case lights up, but the monitor, keyboard, and mouse remain dark, and the motherboard display is inactive. I noticed that changing the RAM slot would sometimes cause it to boot once, but not again after shutting down. The BIOS is updated, and I've replaced the battery, yet the problem persists. I've almost tried everything. I'd really appreciate your help in figuring out what might be wrong!
3 Answers
It sounds like your RAM might not be seated correctly. Do you have one or two sticks installed? Sometimes it's just about getting that snug fit!
Sounds frustrating! Have you checked the power connectors, especially the ones to the motherboard? Sometimes loose connections can cause this kind of issue.
Does your computer POST and then hang? If it does manage to turn on, run this command in the terminal as an administrator: `DISM /Online /Cleanup-Image /RestoreHealth`. It might help sort out any underlying issues when it does boot.

I actually have two sticks, and I've tried both multiple times. It's been such a hassle!