Larry is having an issue where the computer he built is suddenly freezing up and not letting it reboot. So he's gotten into the habit of using a bootable backup. But now he can't get the computer to boot back up. Leo says that most problems like this can be solved by just reinstalling Windows from scratch and starting over. But if it's freezing during the boot, then it could be a host of things, including cabling. One key is to wait for the "beeps," or Power On Self Test (POST). If it beeps, that indicates an issue. Also, pull out your dedicated video card and try rebooting.
Kurt replaced the hard drive in his Lenovo laptop and now it won't boot up. It stops at the boot screen. 24 hours later, it booted up no problem. What gives? Leo says that's common and usually results in a hiccup in the BIOS or UEFI. Leo suspects that the battery on the motherboard has failed. Also, underneath the splash screen could show if the computer tried to boot into Windows and failed. That could indicate a faulty hard drive. Leo suspects a failing power supply could also be the issue.
PJ replaced his Windows XP machine with Windows 8.1. But lately, he's gotten the "amber light of death" and it won't boot up. His tech guy says he needs a new computer. But could he replace the motherboard? Leo says it could be a power supply, so swap that out first. If that doesn't work, then check the RAM. It may be that the RAM has become unseated and the computer can't load into it. You also want to be sure that the cables are all connected. PJ replaced the motherboard and it's worked ever since.
Larry is having issues with his Windows 10 machine restarting. It physically shuts down and restarts. Leo says he has a hunch that the power supply is failing and it is causing a restart. It's definitely not a software issue. It may also be heat-related. If it happens under "load," and your fans aren't moving air enough, that could be it. Heat can also be caused if your computer's insides are blanketed with dust. That can cause the computer to overheat as well.
But the likely culprit is the power supply.
Dave upgraded his nephew's PC into a gaming PC, but he needs to upgrade the power supply with an 8 pin power cable. He bought one, but will he have issues? Leo says he will be OK if the PINOUTs on both connectors are power only. Don't plug it into a data plug if it's a 4 pin connector. Any issues with installing a new PCIe graphic's card before booting up? Leo says he may have to specify the external GPU in the BIOS, and then let Windows install the necessary drivers.
Ben is getting a "blue frowning face," which Leo says is the new bluescreen of death. Leo says it's likely a hardware or driver issue. Modern operating systems don't BSOD when an app crashes anymore. But low-level errors like drivers or hardware will cause it. If it's just doing it when he's doing nothing, it could mean a failing power supply. Also, make sure the drivers are up to date.
Vicki put her computer to sleep and now it won't wake up again. Leo says the usual culprit is the power supply. She should try turning her monitor off and back on. She can press and hold the on/off switch of her computer for ten seconds. That will turn her computer fully off. She should unplug it for a few minutes, then plug it back in and turn it on, to see if the monitor will wake up. If it does, sometimes it can fall asleep and not get the signal to turn back on. Then shine a light on the power supply fan and see if it's spinning. If it is, then it isn't the power supply.
Ron's PC died yesterday. He suspects the power supply went south. Leo says there's no sense in replacing it, as he can just replace the power supply. He should check the power cord itself first, though, just to be sure it wasn't just that. If he has to replace it, he could replace the processor too, since it's 7 years old, but then he'll have to replace the motherboard as well. Why not get a bare-bones system that he can get a new processor and motherboard with, and then transfer his SSD, GPU, and other options that he's added to it?
Donald has an Acer Aspire PC running Windows Vista and he's getting a steady blinking light. Leo says that the blinking can mean something. It's like the "Power On Self Test." The motherboard battery may have died, and the light is telling him to replace it. That's the cheapest and easiest fix. If that doesn't fix it, he should look at his desktop power cord. Then he can move on to the power supply.
Brad built a computer running Windows and now it just shuts down while he's still using it. Leo says it sounds like a bad power supply. Brad replaced it, though. Leo says that's the downside of building his own machine -- he'll have to hunt down the problem himself. Leo suspects that since the power supply didn't fix it, the motherboard is probably the culprit. It could have been from a power surge. He should try replacing the battery for the BIOS and see if that resets it. If that doesn't work, it could be the motherboard. The next thing to address would be the CPU.