Cannot change boot startup sequence on T520 to boot from a CD drive

Is it normal for there to be 3 to 5 pixels out within 6 months and 8 to 12 within a year?  I have spots all over my screen.
My second issue is that my DVD/CD drive started occasionally scratching disks within 6 months and at 11 months started "skip-playing".  Sounds like one of the early CD players when you drive over RR tracks.  And, of course, it is all out of warranty now.
I expected better from Lenovo - am I an exception?

Hi,
Your subject line doesn't match the content of your post.  Do you actually have a T520?  If so we'll move your post to the correct fourm.
If you have a 3000 series or essential - or something else, we'll change the subject line.
Z.
The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.  The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
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