Alright, Anandtechers -- I need some help here. Here's the summary:
A couple years ago I purchased a refurb Lenovo M92P Tower desktop w/ Windows 8. I didn't change much -- I added another stick of memory, and a low end Radeon video card for dual displays. It has been a fairly reliable computer but occasionally had some start-up glitches (would hang and have to be rebooted again) and had an odd USB problem (plugging in a new USB device would disable the connection to an already-connected USB device).
I decided to do the Win10 upgrade and then a reformat/clean install to start fresh. I copied all important data off the computer, and completed the Win10 install relatively easily. I then downloaded the Install Media Creation Tool and made both DVD and USB flash drive install media for Win10 x64.
This is where serious problems began. When I used the Win10 Advanced Startup options to attempt to boot from the USB flash drive, it would restart but go right back into Win10, rather than the Win10 installer on the USB drive. I tried with the DVD instead, and it did the same thing.
Then things got worse. At some point, it stopped even booting back up into Windows. It powered on, it would get to the Lenovo splash screen, and no further.
Thus began the process of eliminating all secondary factors. So far, I have:
* Removed the video card and used the onboard VGA
* Attempted boot up with each memory stick individually
* Removed all USB except for the keyboard plugged into a USB 2.0 port
* Replaced the power supply with a known working power supply
I could not get into the UEFI menu until I cleared the CMOS. Once I was able to get into the menu, I have also tried all boot up options (DVD, USB, and existing Win10 on HD) as both UEFI and legacy boots with no success.
My next thought was to see if I could update the motherboard firmware. I downloaded both the USB flash update and the CD ISO. The computer will not boot from the USB flash update, and just hangs at the Lenovo splash screen as before. I do get slightly further with the CD mobo update -- if I select the DVD drive as my boot source, I can hear the drive spin up, the screen changes to black with a blinking cursor in the top left, and then 10 seconds later the drive spins back down and nothing further happens.
So, that's where I am. At this point, I feel like I've eliminated every possibility except for the motherboard, but if anyone sees a gap in my thinking or has any ideas or suggestions, I'm all ears.
A couple years ago I purchased a refurb Lenovo M92P Tower desktop w/ Windows 8. I didn't change much -- I added another stick of memory, and a low end Radeon video card for dual displays. It has been a fairly reliable computer but occasionally had some start-up glitches (would hang and have to be rebooted again) and had an odd USB problem (plugging in a new USB device would disable the connection to an already-connected USB device).
I decided to do the Win10 upgrade and then a reformat/clean install to start fresh. I copied all important data off the computer, and completed the Win10 install relatively easily. I then downloaded the Install Media Creation Tool and made both DVD and USB flash drive install media for Win10 x64.
This is where serious problems began. When I used the Win10 Advanced Startup options to attempt to boot from the USB flash drive, it would restart but go right back into Win10, rather than the Win10 installer on the USB drive. I tried with the DVD instead, and it did the same thing.
Then things got worse. At some point, it stopped even booting back up into Windows. It powered on, it would get to the Lenovo splash screen, and no further.
Thus began the process of eliminating all secondary factors. So far, I have:
* Removed the video card and used the onboard VGA
* Attempted boot up with each memory stick individually
* Removed all USB except for the keyboard plugged into a USB 2.0 port
* Replaced the power supply with a known working power supply
I could not get into the UEFI menu until I cleared the CMOS. Once I was able to get into the menu, I have also tried all boot up options (DVD, USB, and existing Win10 on HD) as both UEFI and legacy boots with no success.
My next thought was to see if I could update the motherboard firmware. I downloaded both the USB flash update and the CD ISO. The computer will not boot from the USB flash update, and just hangs at the Lenovo splash screen as before. I do get slightly further with the CD mobo update -- if I select the DVD drive as my boot source, I can hear the drive spin up, the screen changes to black with a blinking cursor in the top left, and then 10 seconds later the drive spins back down and nothing further happens.
So, that's where I am. At this point, I feel like I've eliminated every possibility except for the motherboard, but if anyone sees a gap in my thinking or has any ideas or suggestions, I'm all ears.
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