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31 Posts

11-18-2016

Philippines

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  • Message 11 of 29

Re: P50 Right Side USB Ports Issue

2017-08-05, 8:17 AM

So I am now on my third motherboard and my rear USB port and the USB c port has decided to go flaky, as well as the side ports.

 

Also, it seems that the side USB port issues seem to be a design flaw as well, with some other users experiencing this issue.

https://www.reddit.com/r/thinkpad/comments/4bsqi2/thinkpad_p50_owners_please_try_this/

 

I am likely out of my work machine for another 1-2 months.

 

Beginning to regret this purchase... ;/

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334 Posts

08-28-2013

United States of America

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  • Message 12 of 29

Re: P50 Right Side USB Ports Issue

2017-08-05, 8:32 AM
That sucks you seem to be having nothing but issues, have you tried powering your P50 off a different wall outlet ect. Perhaps you have some odd power fluctuations going on that over time stress the MOBO? What BIOS are you on?
I own a Y510p SLI (retired), Yoga 2 Pro, X220T, P50 4K (sold), X1C5
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31 Posts

11-18-2016

Philippines

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  • Posts: 31
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  • Message 13 of 29

Re: P50 Right Side USB Ports Issue

2017-08-05, 8:49 AM

That is certainly a possibility but I'm not quite sure given the following circumstances:

 

I alternate between home and work with a 170W power brick at each place (bought a spare on purchase).

 

At home, I'm plugged in to a Cyberpower Sinewave UPS 1500VA. At work, it's an APC Smart UPS 1000VA.

 

These things are currently powering my company servers - and home PC/networking equipment (as well as powered my old laptop) and there wasn't any issue then... Unless the P50 is somehow more sensitive than the others.

 

I've tried updating all my drivers up to current, and am presently on the 1.43 BIOS. All of my present hardware (peripherals/USB devices were used with my previous laptop, which I am now using to type this post since I'm shipping the P50 off to the service center on monday) have no history of problems.

 

Unlucky indeed :|

 

I hope your P50 is treating you better hehe.. it's a beast of a machine when these issues are not present  :)

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334 Posts

08-28-2013

United States of America

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  • Message 14 of 29

Re: P50 Right Side USB Ports Issue

2017-08-05, 8:54 AM
Yeah mines been great, I even use the side ports within vm's without issue. I would try rolling back to bios 1.39 personally. Seems the most stable and what I'm sticking to for the time being.
I own a Y510p SLI (retired), Yoga 2 Pro, X220T, P50 4K (sold), X1C5
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31 Posts

11-18-2016

Philippines

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  • Message 15 of 29

Re: P50 Right Side USB Ports Issue

2017-08-05, 9:19 AM

I don't seem to understand the issue on how the side ports can act up...

 

USB 3.0 devices will only intermittently be discovered,

whereas

USB 2.0 devices will always work on the side ports.

 

A restart seems to fix the problem although I cannot figure out what exactly triggers this issue. I've already updated/downgraded the drivers, fiddled with the power settings when I've never had to before, reinstall USB drivers, etc.

 

I've been troubleshooting/working on computers for the last 15ish years and I can't quite put a finger on what the issue can be caused by..

 

The rear port on the other hand, seems faulty point blank.

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22 Posts

08-29-2016

United States of America

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  • Message 16 of 29

Re:P50 Right Side USB Ports Issue

2021-02-12, 23:03 PM

Hi, I know it's an old issue. But I am just curious if you have got this problem resolved by any chance. I recently bought a Lenovo ThinkPad P50 motherboard and it had the same problem or even worse, none of the USB port is bootable. I set the USB to UEFI bootable in BIOS, I can browse the files on the USB attached to the USB port. But just not bootable. I updated the BIOS to newest and greatist version on earth already with Windows 10 harddrive borrowed from a Thinkpad T560 machine since it's not bootable and cannot install Windows 10. It's currently just setting on a ThinkPad 40A5 230W docking station with external display, keyoard, mouse attached to the dock station. I tried USB 2.0 or USB 3.0 Live Ubuntu 18.04 USB drives on top of the Windows 10 intallation USB drive to no avail. Maybe your experience could shine some lights on this issue. 

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31 Posts

11-18-2016

Philippines

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  • Message 17 of 29

Re:P50 Right Side USB Ports Issue

2021-02-13, 2:21 AM

Never got this resolved.

 

Seems like a design issue.

 

The rest of the laptop is still working but:

 

USB 3.0 will only work on the right side motherboard ports if you insert it a certain way.

 

USB 3.0 works at the back, no problem.

 

Went through 3-4 boards all with varying but similar issues. Gave up on that since it appears that it is a design issue, likely fixed with the P51.

 

Looks like you have a different problem though....

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22 Posts

08-29-2016

United States of America

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  • Message 18 of 29

Re:P50 Right Side USB Ports Issue

2021-02-13, 3:14 AM

I just got a call from a local PC repair guy giving me a quote for replacing the Intel CPU i7-6820HQ on this P50 motherboard for $199 if it works or no charge if ti doesn't work. He said he has fixed a bunch of them with USB port not detecting or not booting issue on ThinkPad or Dell Latitude laptops with i7-6700HQ or i7-6820HQ. it sounds like a CPU issue to me since it happens to any brand using these two CPU's. I turned down the offers anyway.   

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537 Posts

12-24-2011

United Arab Emirates

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  • Message 19 of 29

Re:P50 Right Side USB Ports Issue

2021-02-13, 17:42 PM

How can you change the CPU on a P50? It is soldered to the motherboard.For the booting issue seems to be a BIOS setting. What is your Startup-Legacy Boot setting? I believe it should be set to BOTH. Have you tried booting the USB on another laptop?

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22 Posts

08-29-2016

United States of America

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  • Message 20 of 29

Re:P50 Right Side USB Ports Issue

2021-02-13, 18:20 PM

Oh yes. The Ubuntu live USB's have been verified on my ThinkPad T560/T590/W541 to be bootable without any issue in BOTH, or Legacy only, or UEFI only modes in BIOS settings. Also no devices are excluded from the boot menu either. The PC repair guy has the BIOS chip reflashed to the factory condition with flash programmer. The PC repair guy has a motherboard repair station with pre-heat base to desolder and re-solder the CPU. All USB ports are functional as far as read/write files, just not bootable. The P50 are functional in WIndows 10 Pro except non-bootable USB ports. The WIndows 10 Pro HDD is borrowed from my ThinkPad T560, so it's not activated on this P50. I have a P50 recovery USB drive to get this P50's Windows 10 Pro to be activated if I can boot the installation USB.   

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