did you do a disk install and follow this advice?:
Did you do a USB install and fully format the USB stick?:
Did you pre-partition/format your drive?:
The recommended specs for Ubuntu Mate:
Ubuntu Mate:
Minimum:
Pentium III 750-megahertz
512 megabytes (MB) of RAM
8 gigabytes (GB) of available space on the hard disk
Bootable DVD-ROM drive
Keyboard and Mouse (or other pointing device)
Video adapter and monitor with 1024 x 768 or higher resolution
Sound card
Speakers or headphones
Recommended:
Core 2 Duo 1.6-gigahertz
2 gigabytes (GB) RAM
16 gigabytes (GB) of available space on the hard disk
Bootable USB flash drive
Keyboard and Mouse (or other pointing device)
3D capable video adapter and wide screen monitor with 1366 x 768 or higher resolution
Sound card
Speakers or headphones