My Dell Vostro 3550 Windows 10 64 bit corrupt many time please solve my probem

I would suspect a hardware issue with your drive. Do you still have the original hard disk drive?

Run Dell Diagnostics:
Immediately after pressing the power button to turn on the laptop (or after clicking the Reboot command), press F12 repeatedly to enter the One Time Boot Menu, select Diagnostics and press Enter. The Dell Diagnostics will test all your hardware. After letting it test everything, select to perform an extended drive test. It would also be worth selecting the extended memory test.

Also run Windows' own chkdsk. From a CMD prompt:

chkdsk C: /r

Repeat that command for each of your partitions, replacing "C" with the appropriate partition letter. In Disk Management you can assign drive letters to hidden partitions, so that you can also run chkdsk on each of them.

Thanks