I'm looking for some help deciphering what issue I'm having. It seems lately the computer shuts down. Then on power on, it says there's no boot disk. I did the Dell Diags and everything shows good. I finally get into Windows and the Intel RST says all is fine. I look in Event Viewer and the following is the only thing I can find related to the problems...

- System

- Provider

[ Name] iaStorA

- EventID 129

[ Qualifiers] 32772

Level 3

Task 0

Keywords 0x80000000000000

- TimeCreated

[ SystemTime] 2017-08-25T16:05:12.578983300Z

EventRecordID 6771

Channel System

Computer Home

Security

- EventData

\Device\RaidPort0
0F001800010000000000000081000480010000000000000000000000000000000000000000000000000000000000000000000000810004800000000000000000

--------------------------------------------------------------------------------

Binary data:

In Words

0000: 0018000F 00000001 00000000 80040081
0010: 00000001 00000000 00000000 00000000
0020: 00000000 00000000 00000000 00000000
0030: 00000000 80040081 00000000 00000000

In Bytes

0000: 0F 00 18 00 01 00 00 00 ........
0008: 00 00 00 00 81 00 04 80 ......€
0010: 01 00 00 00 00 00 00 00 ........
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........
0028: 00 00 00 00 00 00 00 00 ........
0030: 00 00 00 00 81 00 04 80 ......€
0038: 00 00 00 00 00 00 00 00 ........

The laptop this is on is a Dell Inspiron 3521. Any ideas?

Thanks!