Hi,

pattern 2 amber, 4 white is for Memory or RAM failure. 

First thing i would try is reseating RAM.

Second thing i would do is flea power release:

1. Turn off your computer.

2. Remove the base cover.

3. Press and hold the power button for 15 seconds to drain the flea power.

4. Replace the base cover.

5. Turn on your computer.

6. Dell forgot to add up one step for this ( its to unplug battery doing flee power release)

Third thing i would do is hold power button for 30 seconds ( more on link bellow):

https://www.dell.com/support/article/si/en/sibsdt1/sln304892/how-to-reset-real-time-clock-rtc-to-recover-your-dell-portable-system?lang=en

Also try this if your product is supported:

http://dell.to/2u4vSud

The HDD and DATA should be unharmed as it doesnt have anything to do with above troubles.

Regards,

Hi georgemery,

Thanks for posting.  Apologies that your system is not performing as expected.

If you still require assistance and the system is under warranty, you may contact me privately. Be sure to include your personal information (name, address, telephone, email) and your computer's service tag number in your message. Thanks.

If there is no warranty, then you could contact our Out of Warranty team to get a quote for a paid service request. 

Thanks so much for getting back to me. I just tried unopugging the ram and replugging. This didn't work so I then tried having just one plugged in. It didn't work when the first came out (same prob) but when I tried just having the second in alone the laptop turned on. It said there was a change in storage detected  and gave me the option to diagnose or continue booting. I clicked continue and then the screen went weird. It froze with eveey pixel being distorted and looked v strange. This happened all in the space of about 1 min. Since then I tried the booting in safe mode with just one ram plugged in and I have the same problem each time,crazy pixels frozen on the screen  I will try your other methods now.. 

Please continue to work with those troubleshooting tips that were posted and let us know.  

If you still require assistance and the system is under warranty, you may contact me privately. Be sure to include your personal information (name, address, telephone, email) and your computer's service tag number in your message. Thanks.