Hi wavare_ajinkya ,
Welcome to the Community Forums.
As a general rule, CRU (customer replaceable parts ) will not void the warranty as listed from the hardware manual . However most upgrades on this model shows that such are considered FRU (field replaceable unit) , meaning you would have to open up additional parts and might require skill and specific tools thus CRU ID is N. (item6 page 72 ).
1. Upgrading your RAM however would not void any warranty.
We had same issue discussed on this thread .
On quotes: " Similar to this query is this case for the Z500 replacement of optical drive which is also a CRU Id - N and this thread.
Warranty agreement :
What this Warranty Does not Cover
- failure or damage resulting from misuse, abuse, accident, modification, unsuitable physical or operating environment, natural disasters, power surges, improper maintenance, or use not in accordance with product information materials
-damage caused by a non-authorized service provider
-failure of, or damage caused by, any third party products, including those that Lenovo may provide or integrate into the Lenovo product at your request
Warranty is not covered if during the process of modification , damage or accidents may incur both on the replaced parts and the original devices ."
The answer would be no , upgrading the harddrive ,RAM will not void your warranty not unless that original parts gets damage because of or during the process of upgrade.
For best measure , you may give Lenovo Tech a call so that they would be able to note it on your account for the pc that you have plan for upgrades .
2. Changing the original operating system would not void the hardware warranty , but support for the software such as the new or original Operating System (example to restore it back/ drivers issue etc.) would be users responsibility and functionality thereof.
Hope this answered your query .
Regards