It may be a failing RAM stick. Have you tried re-seating the RAM?

Fail RAM can cause crashes/freezes and corrupt files

2000-0151 error indicates your hard disk drive (HDD) has failed and may be nearing the end of its life. Please backup the data from the system if it’s booting up.

Ye tried re seating ram and hdd nothing worked 

Sinkalou67

By the way, do you know what type of Hard drive or Solid State drive is in the computer? 

How to Check the System Configuration on Your Dell System

https://www.dell.com/support/article/en-us/sln285421/how-to-check-the-system-configuration-on-your-dell-system?lang=en

I'm assuming windows 10 is on the computer....

Error code 2000-0151 ( per AdrianG001) usually indicate hard drive is failing or has failed  - see link below). 

Resolve Hardware Issues With Built-in and Online Diagnostics (SupportAssist ePSA, ePSA or PSA Error Codes)

https://www.dell.com/support/article/en-us/sln115162/resolve-hardware-issues-with-built-in-and-online-diagnostics-supportassist-epsa-epsa-or-psa-error-codes?lang=en

Just to be sure.....

If you still able to boot into windows, update the Hard drive in device manager or look for a firmware update for the hard drive in your Dell Product Support page. 

Drivers & Downloads

If you aren't able to boot into windows, you can exercise your warranty by contacting Dell Technical Support in link below and request Dell to replace the hard drive for free or ask Dell to send you a free hard drive replacement. 

Contact Information | Dell US