Hi, Fast startup not working in Windows 8.1 (clean install). The boot time is 50-60 seconds but I don't know why beacuse I don't have any driver issues (I have the latest drivers and sleep is working without problems). My PC: Gigabyte B85-D2V Intel Core G3220 4 GB RAM Kingstone Seagate Barracuda 1 TB GT 630 GDDR5 1 GB (doesn't support UEFI boot) The windows has been installed in UEFI and Ultra Fast Startup enabled in UEFI. Secure boot disabled beacuse graphics card doesn't support it. Thanks!