PC Specs:

• Processor : Intel Core i 5 - 2400

• RAM : 4GB (D D R 3)

• Model : Dell (O p t i p l e x) 990

• Operating System : Windows 8.1 Pro

• GPU : Intel Integrated Graphics 2000

 

Issues:

1. PC restarts several time

2. Its takes 'bout 5 to 10 minutes stuck on Dell Logo then starts

 

Explanation:

Issue no 1:

When I starts the computer it shows a black screen for 'bout 3 to 4 seconds and then suddenly closes after 5 seconds it starts automatically and then it works normally but when after booting (before showing windows logo) it again shut down and then after 5 seconds it starts again automatically and then works normally , starts windows and tasks normally like other computers.

Issue no 2:

When PC starts for second time it takes 'bout 5 to 10 minutes showing Dell logo then continue.

 

Things I have tried:

1. I upgraded from Windows 7 to Windows 8.1

2. I update BIOS from (A 0 2) to A10

 

I don't why this happens I want help. Please help me.

 

Note:

Sorry for my bad English