New
#1
won't boot into Windows 10 when USB flash drive is inserted
I have a used Thinkpad SL510 purchased on eBay.
It came with Window 7 Pro.
It is an older laptop so no UEFI.
I immediately did a clean installation of Windows 10 Pro 1803 64-bit.
I managed to find all the drivers for it, and there are no problems in Device Manager.
Windows 10 is activated.
The BIOS is the latest version.
I no longer can use F12 to choose the Boot Menu.
Before installing Windows 10, I had changed the boot order in BIOS to USB HDD, USB CD ROM, ATAPI CD ROM, HDD.
What happens now instead is that the laptop will not boot into Windows 10 when a USB hard drive or a USB thumb drive is inserted into any of the 4 USB ports.
The USB drives contain only data files and are not bootable.
Can someone explain why this is happening and how do I fix it?