corrupted catalogs

[PurePal]

Lightroom crashed repeatedly. then catalog could not be repaired, please open a back up catolog.

I open a back up and this one also crashed and could not be repaired, and the same happened to 3 different backups from the last 2 weeks. I use lightroom every day, has about 370.000 pictures in the cataloge. the catalog(s) are saved on an designated internal ssd drive. I have had crashes before but not being able to repair  has not happened before - and going back more than a month is a lot of work since I edit and do changes constantly.   Any solution to repair?   Or any suggestion to what the cause of all this trouble can be?

[dj_paige]

You most likely have a malfunctioning hard disk. Try putting a recent backup of the catalog in some other folder on your hard disk. Try putting a recent backup of the catalog on a different disk.

[PurePal]

Yes,

Found the problem.  One ram stick was causing the problem. Took out the stick, everything worked as normal..