Windows 10 Upgrade, Beware of Using UEFI Boot Mode Instead of the BIOS

[Garry Rapson]

This info may help some on the forum, I have had two instances 1 x Laptop and 1 x desktop, several weeks after upgrade the device slows to snail crawl and corrupts the internet speed on all devices connected. Firstly the desktop, I found that the device's bios was set to boot from the Boot Manager and not the hard drive, alter this setting and the device will not boot, do a clean install, all good, fixed, In the laptop which was a HP Sleekbook, This laptop has UEFI firmware but will allow you to enable the legacy BIOS compatibility mode. In this mode, the UEFI firmware functions as a standard BIOS instead of UEFI firmware. Ensure that Secure Boot is Disabled. The laptop after the Bios change would still reboot but very slow, completed a clean install and this has rectified the issue. Windows 10 will allow reinstalls without a new activation key, just skip the activation screens, check after install completion to ensure that reactivation has occurred. Hope this helps...Garry

 

[RecumbentTim]

Thats an upgrade from Windows 8, correct?

 

[Garry Rapson]

The Laptop was originally a factory supplied win 8 but was upgraded to 8.1, worked well on 8.1 but failed on Win10 due to the UEFI boot mode, The Desktop was an 8.1 build from new, the motherboard BIOS was defaulted to boot from the "Boot Manager".