Please put your answers after the quoted questions, to maintain readability. I moved your last response in the quote above, so that it and this reply could also be read in proper sequence.
Is your "BIOS" actually a UEFI type?
Ok.. Sorry for the mess!
I'm not too sure if it is UEFI. How can I check and what bios type should I have?
Is it a relatively new computer? If it's a few years old, it is probably a legacy BIOS. If it's new, most factory motherboards these days have the UEFI replacement for the traditional BIOS. Knowing the make and model of a factory built system will give the information needed to Google the specs for the machine. If you built it yourself the motherboard manual should tell you what type BIOS/UEFI is being used.
I build all of my own machines, and have since 1998. My current one has a hybrid EFI/BIOS and chooses which to use based on hard drive size. 2 TB and under it uses the legacy BIOS. Over 2 TB it automatically switches to EFI. Unfortunately, the PCLinuxOS images produce a burned CD/DVD that will not boot on this machine, which is why I asked about yours.
My workaround is to use isohybrid from the syslinux applications to create a slightly modified version of the PCLinuxOS image, then use the dd command to write the modified image to a USB flash drive, and boot the image from that. It works the same as the burned DVD is supposed to, but without the optical drive being used.
If you have a flash drive available, you could do the same. You would then also have to place the USB-hdd entry before the hard drive in your BIOS boot order. My boot order is USB-hdd first, CDROM second, and HDD third. The actual titles for these devices varies slightly, with different BIOS, but you should be able to figure out which is which in your particular BIOS type.
I saw your last reply as I typed this, so add these questions;
Did you check the md5sum of the latest image after you downloaded it?
Did you burn the disk at the slowest speed possible?
Did you check the md5sum of the burned disk, after burning it?