Im trying to install mandrake 10 official instead of pingo linux 2.0 on my pc. When I boot up pc with mandrake cd 1 in cd-rom, program writes me message: COULD NOT UNCOMPRESS SECOND STAGE RAMDISK. THIS IS PROBABLY AN HARDWARE ERROR WHILE READING DATA.
Could pliz someone help me what to do?

Pc: celeron 2600, geforce fx 5200, asus p4s533 motherboard
allready installed windows xp

This is probably a bad download(did you check the md5sums) or a bad burn(try burning at a slower speed).

im quite a nowbie with pcs, so if you could pliz explain me what means "md5sums"?

Thanx for your help!

No problem. md5sum is just a way of insuring that the iso file you downloaded is an exact copy of the original file, i.e. a good download. If you run the md5sum program on a file, it will generate a unique 32 bit string of letters and numbers. To verify you have a good download, you run the same md5sum program on the iso you downloaded and compare the string generated with the md5sum string given on the website to make sure they match. Here's a link that explains the whole thing:

http://linuxiso.org/viewdoc.php/verifyiso.html

md5sum is also available for windows. See the above link for that.

Go back to the website that you downloaded the mdk isos from and download the md5sum file as well. It's a small text file, only a few bytes, but it contains the md5sums of the three mdk isos you downloaded. Then download the windows md5sum program and run it on your downloaded files and make sure they match the published md5sums.