Dell Dimension C521 does not start

I have a Dell Dimension C521 desktop computer. When I try to start it, the fan turns on and is really hard, but the screen does not light. The power light on my computer lights up (green), but the 3 & 4 diagnostic lights flash repeatedly on the front of the computer. What is the cause? What can I do about it?

NetFanatic123

Hello Bev,

The rest green power light on, no blinking, no beeps. I had no problem until last night after that I removed the hard drive and reinstalled.

How can I remove the memory modules?

Thanks :)

 

NetFanatic123

For the removal and reinstallation of the RAM, details are HERE NOTE from the ADMIN: broken link has been removed from this post by Dell >

A hint: make sure that the modules are filled into the slots and the clips are in the notches.

While the case is open, check that all the power cable and the data are correctly connected to the drive and the motherboard, by removing and reconnecting them.

Why the hard disk has been deleted and reinstalled, was this HD replacement, or what?

Bev.

Tags: Dell Desktop

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