Installing Windows 7 on Asus X551M blue screen appeared during installation.Disabled secure boot enable csm the same result.How to solve this problem?

You have two cases:

1-  problem in the hard disk meed to fixk bad sector>

2 - or your  memory have some problems ...

i think you check your hared disk first .

best regards.

Check Ram

Check whether the RAM is good or bad, and also check the SATA configuration as AHCI or SATA mode