What I find is that old machines sometimes don't boot from the recovery media. The reasons why are well known (old drive, lens cleaning, or the need to duplicate that CD) so while all this is known, why not plow ahead and try?
Overheating is well known. While there were a few models that no cure was ever given (mostly those bad old Pentium 4 models) you can clean the vents, heat sinks and apply new heat sink compound to alleviate heat issues. All this is widely discussed so I'll stop here.
I have a Vaio (about year 2000) running XP, with a dead battery and overheating problems. However I do have the Sony recovery discs (XP) plus zipped downloads of SP1 and SP2.
I have been asked to look at another, lower specced Vaio from about 2004, and would welcome any views on whether "my" recovery disc is likely to load and function on the later but less capable Vaio. (I accept all data will be lost, I assume the recovery disc does a full reformat).
Also any suggestions for improving the overheating issue?
Thanks in advance.