Power shuts off and takes several minutes to turn back on

Check this link for more info on beep codes.

https://kb.iu.edu/d/afzy

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Bios beep codes to many popular systems are given.

If this is a PC follow these steps.
1.!!! IMPORTANT !!!! Turn the computer off and unplug it.
2. Open the tower and locate the mother board. This will be the largest board that everything is link to.
3. You will see a watch like battery, remove it.
4. Wait 30 seconds to a minute.
5. Now replace the battery and close the tower
6. Power up the computer and your login request should be removed.

This maybe the same for laptops

http://www.dell.com/support/Manuals/us/en/19/Product/precision-470

Click on -
Dell Precision Workstation 470 and 670 Computer User's Guide

In the list on the right side, click on - Tools to Help Solve Problems

In the list on the left side, click on - Diagnostic Lights

Yellow (A) Green (B) Yellow (C)

"A possible VRM 1 failure has occurred"

VRM stands for Voltage Regulator Module.

It regulates Voltage for the Processor.

The Processor MUST have a steady, 'clean', supply of Voltage; and it MUST be kept within the tight voltage range, for the Processor.

Too little, or too much; and the Processor turns off. (BIOS turns it off)

Your motherboard supports two Processors.

1) Processor (CPU_0) Zero which is in the middle of the motherboard, next to the PCI Express x16 slot;

2) and Processor (CPU_1) One, which is next to it.

The VRM 1 has failed. Needs to be replaced.

http://www.ebay.com/itm/DELL-H2703-PRECISION-470-670-VRM-VOLTAGE-REGULATOR-MODULE-TH-0H2703-WS470-WS670-/380369885440

VRM's used are interchangeable.

IMHO you can remove Processor 1 (CPU_1), and it's VRM, and still use the computer; albiet slower though.

For additional questions please post in a Comment.
Regards,
joecoolvette

Try looking here:
http://www.dell.com/support/article/us/en/19/sln115082/resolve-usb-port-not-working-issues?lang=en

DONT EVER UPDATE BIOS....99.99% IT WILL MAKE UR PC A DUD....MFGS DONT MAKE NEW UPDATES FOR OLD BIOS...AS BIOS CHIPS ARE HARDWARE MFG SPECIFIC...IF U STILL WANT TO DO...U NEED TO BE 1000000% SURE OF WHAT BIOS IS IN UR MACHINE AND WHAT BIOS SOFTWARE IS INSIDE THAT.....EVEN I AS AN EXPERT DONT ATEMPT IT....AS ANY CHANGE TO BIOS IS DIFFICULT TO REVERSE....
writing in all caps amounts to shouting....
sorry i wrote it in capital....not ment to shout at u...
just warning u

Did you change BIOS settings or does your BIOS supports dual processors?

try to remove or detach any newly hardware.and check the Ram

You probably removed the "primary" CPU,
and the computer cannot operate only with the "secondary" CPU installed.

Move the CPU from the "secondary" slot to the "primary" slot.

If it not power up the first make sure power cable isgood try with other power cable.
Then check on cpu.reconnect ATX connector from smps to motherbord.
Pull cmos cell from motherbord for 10 minutes ..
Make sure your smps power supply unit of cpu is good.It is squarebox in back side of cpu .
If still not power up the smps has issue.
Let me know if you need further assistance.
Thanks.