Red bar in local disk (C:)

Solution
The red bar is in no way related to the re-seating of your RAM.

That is a VERY full drive and Windows is letting you know that you either need to move some data to a different drive or upgrade the main boot drive to a larger disk. When drives get that full they begin experiencing noticeable slowdown, so before long you'll see some performance drop.

From the looks of the picture you do have a data drive, so it would be a good idea to migrate some non-critical material from your boot drive when you get a chance.
The red bar is in no way related to the re-seating of your RAM.

That is a VERY full drive and Windows is letting you know that you either need to move some data to a different drive or upgrade the main boot drive to a larger disk. When drives get that full they begin experiencing noticeable slowdown, so before long you'll see some performance drop.

From the looks of the picture you do have a data drive, so it would be a good idea to migrate some non-critical material from your boot drive when you get a chance.
 
Solution
And a third to treble confirm sir!

Less than 10% of storage space free.

Clean your drive out from, old error reports, and offline stored files ect.

Right click on the drive that has 10% storage space free if your C drive with the os on it.
And do a disk cleanup if so.
That will free some space up if it is the working OS drive of C: