Issue with no power via USB connection.

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11-14-2016, 09:06 AM

I received my friend's computer a few weeks ago to help him get it working again. After going through it, he ordered several upgrades including an SSD, a new case, a CPU cooler, fans, and a power supply. Although the machine is quite old, we thought it would be sufficient for the limited work he planned.

I will detail everything below once I resolve the issues. I removed everything from the old case, cleaned it thoroughly, reworked the CPU, installed the cooler, and reinstalled all components into the new case. Everything seems to be connected and functioning well so far. The old hard drive had Windows 7 installed, so I upgraded it to Windows 10 and started the updates.

However, during a reboot, the system failed to boot properly. There was no screen activity, the monitor didn’t enter standby mode, and there were no power interruptions on the keyboard (NL/SL/CL) when the power button was pressed.

To troubleshoot, I cleared the CMOS, removed the battery, adjusted the jumper, and tried replacing the CMOS battery again. Despite these efforts, the results remained the same. I also removed the video card, reinserted it, and tried connecting a RAM stick—four times, using four sticks—but nothing worked. I then swapped out the video cards without success.

The most puzzling part was finding an even older motherboard/CPU combo that had previously worked. After assembling it and following the same steps, it still didn’t function properly. I also replaced the power supply with the one he already had in his system, but the machine still wouldn’t start.

The motherboard has an LED row at the top to indicate issues or errors, but everything looks fine visually.

Am I just overwhelmed and unable to see the big picture, or is there something more going on?

Hammerkirby123

11-14-2016, 09:06 AM #1

Amegahoney
Posting Freak

789

11-19-2016, 03:09 AM

Did you rely solely on the cables provided by the PSU?

Amegahoney

11-19-2016, 03:09 AM #2

Did you rely solely on the cables provided by the PSU?

ep05
Junior Member

11-19-2016, 04:39 AM

Remove the video card, turn it on, let it emit a beep for roughly thirty seconds, then switch it off before installing the new one.

ep05

11-19-2016, 04:39 AM #3

Remove the video card, turn it on, let it emit a beep for roughly thirty seconds, then switch it off before installing the new one.

SQUID700
Junior Member

11-26-2016, 06:36 AM

Only cables labeled with psu are included.

SQUID700

11-26-2016, 06:36 AM #4

Only cables labeled with psu are included.

VebbiHD
Member

209

11-26-2016, 07:02 AM

I broke it up this morning, split every cable and part. Now I’ll put it back together one piece at a time.

VebbiHD

11-26-2016, 07:02 AM #5

I broke it up this morning, split every cable and part. Now I’ll put it back together one piece at a time.

Thelo58
Member

190

12-03-2016, 09:05 PM

It would be good to know the power supply voltages. Replacing the PSU doesn't necessarily prove that power is not a problem. You could have an open or a short somehere in the power circuits.

Thelo58

12-03-2016, 09:05 PM #6

It would be good to know the power supply voltages. Replacing the PSU doesn't necessarily prove that power is not a problem. You could have an open or a short somehere in the power circuits.

Bombartia
Senior Member

430

12-08-2016, 07:41 AM

This situation prompted me to replace the PSU entirely, assuming the issue was either the cable or the PSU itself, but unfortunately it didn’t resolve it. If it doesn’t improve things, I’ll use a multimeter.

Bombartia

12-08-2016, 07:41 AM #7

Juan2610
Posting Freak

875

12-09-2016, 01:23 PM

They are inexpensive and also helpful for diagnosing car and home electrical issues. Occasionally it's wiser to bring it to a repair shop.

Juan2610

12-09-2016, 01:23 PM #8

They are inexpensive and also helpful for diagnosing car and home electrical issues. Occasionally it's wiser to bring it to a repair shop.

PhantomRazer
Member

186

12-16-2016, 01:38 PM

I have three different MM's, which means I'm somewhat familiar with them. Regarding their practicality, it doesn't really help. If there was a choice, I wouldn't be here, especially considering the remote area we live in.

PhantomRazer

12-16-2016, 01:38 PM #9

Ninjas_R_OP
Senior Member

743

12-17-2016, 12:16 PM

#10

Did you trigger an error to restart the PCIe npm? Because accessing BIOS isn't possible, and clearing CMOS doesn't guarantee a fix.

Ninjas_R_OP

12-17-2016, 12:16 PM #10

Did you trigger an error to restart the PCIe npm? Because accessing BIOS isn't possible, and clearing CMOS doesn't guarantee a fix.

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